Theory Wiki - User contributions [en]

Collected User Requests

2013-12-02T16:36:34Z

Alida: /* Export */

See prioritized items on [[DataShop Feature Wish List]].

== Annotations ==
* Some links from Ruogo Kang's (CMU PhD student, Sara Kiesler) recent talk. -- Ken, email, 8/24/2011
** http://vis.stanford.edu/papers/senseus
** http://vis.berkeley.edu/papers/commentspace/

==== Annotations on Transaction Level ====
* I have models which can annotate things like: gaming, bored, etc. on the transaction level. -- Ryan Baker, ET Mtg 12/5/2007

==== Annotations on Student Level ====
* Would annotate on student level. -- Ido Roll, User Meeting, 1/19/2009

==== Annotations on Pages ====
* See the cool thing created by Jeffery Heer where all the settings of the page were recorded with the comment. -- Ryan Baker, DS Team Mtg 5/23/2008

==== Dataset Discussion - Capture data-integrity issues ====
* As a stakeholder in the DataShop project, I want to capture and publicize the data-integrity issues discovered with data sets so that data is better documented (and so we've fulfilled a promise to our funders to better document data). -- Ken Koedinger, Team Meeting, 8/15/2009
* As a user of DataShop, I want to discuss datasets and have that discussion attached to the dataset so that others can comment and better understand any data-integrity issues I've found.

==== Linking to internal pages ====

* It would be handy if a link can be saved to any dataset, sample, page in the DataShop. -- [[Alida]], 10/18/2007
** Currently, https://pslc-qa.andrew.cmu.edu/datashop/DatasetInfo?datasetId=793 works if you are already logged in.

==== Have a link from the DataShop to the Theory Wiki (Dataset to Project Page) ====

* Can we link from the dataset to the project page on the Theory Wiki? In the pipeline have a clickable link to the project page (make project name clickable). -- Michael Bett, ET Mtg 11/14/2007
** Link to a dataset directly? Is that obvious to users? Click on dataset link -> log in -> redirected back to dataset. -- Brett Leber

== Data Format ==
==== Capture the question prompt and answer choices the student chose from ====
* As a research, I want to be able to identify steps based on the question prompt—not the difficult-to-understand step names that come from selection and action of my tutor—so that I can analyze the data more easily. For multiple choice questions, I also want to be able to see all of the choices that were available to the student. -- Eli Silk - February 1, 2011 (meeting with Brett and Ross Higashi of the FIRE project)
** Near-term solution is to create a table locally that maps steps to prompts
** Another solution is to ask CTAT team to modify their Flash components so that they log this information as custom fields
** Long-term solution is to make these fields into standard fields in the tutor message format
** In the email thread "Cognitive Tutor Development and Evaluation Requests", there is support for this general idea from Ken Koedinger, Albert Corbett, and Christian Schunn.
** Ken added that "Ideally, we may want to store any images that the student can see and where they reside on the screen ..."

== Data Modeling ==
=== Non-KC Modeling ===

==== Automatic Distillation ====
* As an educational data miner wishing to develop a machine learned model with PSLC data, I would like to be able to automatically distill data features (e.g. custom fields) commonly used in past educational data mining research for a new data set (see, for instance, Baker, Corbett, Roll, & Koedinger, 2008 in UMUAI) -- Ryan Baker, Summer 2008, Startup Memo
** Could be implemented as a plug-in
* Also interested in this feature idea. -- Dan Franklin, Oct 2008

==== Upload model and apply it to new data set ====

* As an EDM researcher, I would like to take a model, expressable as a linear formula on DataShop fields, or a simple code procedure (e.g. Bayesian Knowledge Tracing, which Ryan has code for), and apply it to a new data set, so that I can ... -- Ryan Baker, Sept 2008
* Also interested in this. -- Maxine Eskenazi, Sept 2008
* May work best as a plug-in
** Code to display GUI to choose which data sets to use, calls model code, re-import to DataShop
** Good to have a way to apply many models, as soon as you import a data set
* Phil has an idea that maybe fits within this one. Please move if there's a better category. -- Brett Leber
<blockquote>This [''transaction? kc? --ed.''] relabeling is really mostly about enabling modeling in DataShop right? With this in mind, I think that it is actually a higher priority to have model alternatives in DataShop.... E.g. Investigators should be able to give you chunks of Java code according to a certain specification, and DataShop should be then able to run these over datasets (perhaps after a certain series of QA occurs according to an SOP) when the investigator clicks some button in DataShop.... Obviously this is a much large project than adding columns, but it is also much more important in my mind. ''-- Phil Pavlik, email to Brett on 1/14/2009''</blockquote>
* Examples:
** Example: running gaming detector in multiple tutors and comparing gaming frequencies
** Example: applying Bayesian Knowledge Tracing to a new data set from the same LearnLab
** Example: applying Ben Shih's models to many data sets. Note that Ben Shih should be included in design of this feature; he is interested, and has a lot of good ideas.

==== Add Different Predicted Values ====
* Would also like to add statistics, different predicted values than what LFA produces. -- Ken Koedinger, ET Meeting, 10/10/2007

==== Bayesian Knowledge Tracing ====
* Bayesian Knowledge-Tracing built into DataShop like LFA is. -- Ryan Baker, Startup Memo, Summer 2008

==== Richer statistics for KC modeling ====

* In addition, to the model stats and estimates generated for learning factor models, we should also create difficulty factor models (i.e., ones with "Slope" parameter). The latter is particularly relevant for the Unique-Step model where the slope parameter is meaningless (but still counts against the BIC value). -- Ken Koedinger, Email "new feature request", 1/22/2009
** Relatedly, we should report significance values on the Slope parameters -- that is, when is the Slope significantly different from 0.
** The KC models page perhaps should also report the log-likelihood and number of parameters (in addition to BIC) and leave out AIC. We might also consider other metrics of model generality, like the "adjusted R2" (if I have this name right -- Joe Beck mentioned in the Assistments meeting yesterday).
** These changes will be part of meeting the CMDM goal of improvement in (or at least demonstrate acceptability of) the cognitive models in 90+ units in our LearnLab courses (or affiliates).

=== KC Modeling ===

==== LFA/AFM: Check if enough memory using formula ====
* The LFA/AFM code could calculate how much RAM would be needed to run the algorithm on a given skill model using the formula provided by Hao. This formula is based on the number of transactions, number of students and number of skills. Right now it will not schedule itself to run on a model with over 300 skills, though there is a manual override. [[User:Alida|Alida]] 13:35, 29 November 2010 (EST)

==== Create KC Models through Web Services ====
* For John Stamper's CMDM project, it would be nice to automatically update KC Models through web services. -- [[User:Koedinger|Ken Koedinger]], DataShop Team Meeting, Sept 11, 2009

==== Automatically discovering new KC model ====

* Would it be possible to run some code (perhaps Hao's KC model selection code, perhaps something else generated by CMDM thrust) to find new best KC model. -- Vincent Aleven, Sept 2008
* As a learning sciences researcher, I would like DataShop to discover a new/better KC model for me.
* Could be done as a plug-in

==== Generate new KC Models with LFA ====
* Not sure who asked for this.
* It would be nice to generate new KC Models with Hao's LFA code
* Would need to specify factors.
* Ideas on where this could run?
** On a separate server? Request it to be run, specify duration. Have separate server queue up requests, email user when done.
** In Java Applet on client machine? -- Phil Pavlik

==== Same Skill Twice on Same Step ====
* Would like to be able to apply the same skill to a step twice during a KC Model Import. -- Ken Koedinger, email, 2/4/2009

==== Save KC Model Import Files ====
* KC Model Import - save the file used to create the KCMs in case we need to recreate them. -- Ken Koedinger, email 3/4/2009

==== Log Likelihood and MAD ====
* Log Likelihood, MAD (mean absolute deviation) problem, MAD step (store and show) -- Hao Cen
** This is a variation on "Richer statistics for KC modeling" above. Probably should be merged. - Ken Koedinger

==== Better naming for KCs in auto-generated Unique-Step KCM ====

As a researcher, I want the KCs in the Unique-Step model to have better names than KC1, KC2, etc, so that I can easily tell which generated KCs go with which unique step.

* Hui Cheng (Email 1/20/2009), Ken Koedinger (Email 1/22/2009)
* Could you put this in your new feature request list: could the “Unique-step model” be better labeled then just “KC1”, “KC2” and etc? For example, for Assistments data, you could use part of the “Step Name”. -- Hui Cheng, Email 1/20/2009
* But, anything is better than "KC". -- Ken Koedinger, email, 1/22/2009
<blockquote>A simple alternative, that preserves uniqueness and addresses length, is to concatenate: 1) the first K letters of the step name 2) a unique numerical increment (same as the "3" in "KC3"). Note that (2) guarantees uniqueness just as it does in the current "KC<num>" scheme. Or perhaps better given that step names are often scoped within problems, is to concatenate: 1) the first L letters of the problem name 2) the first M letters of the step name 3) a unique numerical increment (just like the "3" in "KC3") I think K or L+M should be as big as possible without making the KC names indistinguishable (because they run off the right margin) in the KC list on the Learning Curve and other pages. </blockquote>

==== Visualize Learning Curve Split ====
* Be able to visualize a learning curve split into 2 based on a specification of a subset of problems. -- Albert Corbett, Math CCM, November 2008
* Harder: make me a new KCM out of it. -- Ken Koedinger, Team Mtg, Dec 5, 2008, while trying to describe Albert's request to Alida

==== Statistical Significance ====
* Can DataShop determine if the difference between conditions or learning curves is statistically significant? -- general theme at workshop, probably mentioned by Bob Hausmann in his talk, Winter Workshop 1/23/2008
** Can't do it yet in DataShop, but I can show you how to do it in R (or SPSS...) after you've exported the data -- export the "student-step rollup" than the whole transaction table. --[[User:Koedinger|Koedinger]] 16:30, 16 September 2009 (EDT)
*** This comment perhaps belongs (exists?) elsewhere: The current student-step rollup export (relly, all exports) should be such that I can immediately load it into R (and other packages) without error. Now errors occur, for instance, because there are "#" in the variable names i the student-step rollup. However, it is currently a road-block for helping folks like Bob do analyzes they want to do. --[[User:Koedinger|Koedinger]] 16:30, 16 September 2009 (EDT)
*** See [[Condition in Student-Step Rollup]] -- [[User:Alida|Alida]] 10:35, 17 September 2009 (EDT)

==== Split and Merge Skills ====

* Hand searches though a p-matrix for a dataset to split and merge skills. (Pie in the Sky) -- Ken Koedinger, Team Mtg, 02/22/2008

==== Notes on new KCMs ====

* It would be good if I could add a note to a KC model that was newly imported. -- Noboru Matsuda, email, Nov 19, 2009

==== Display Learning Curves Grouped by Interestingness ====

* The page displaying all the learning curves today seems to be alphabetically sorted by KC name, which is not necessarily meaningful.
* An alternative presentation is to group the curves into 4 sets, breaking up the page. Set 1 has curves that contain significant spikes, and therefore seem to be "low-hanging fruit" for purposes of breaking up into KCs. Set 2 has curves with few spikes, but they have a long X axis, suggesting that students are presented with too many opportunities to acquire those KCs. Set 3 has the "good" curves, i.e., nicely decreasing curves that are not too long. Set 4 is "other". -- [http://www.pitt.edu/~goldin Ilya Goldin] 7 December 2009

==== Order KC models according to AIC====
* This is based on results from multiple dataset analyses that compared AIC, BIC and loglikelihood to cross validation RMSE. -- Mimi McLaughlin, 2/9/2011

====Use log of opportunity count for AIC and BIC calculations====
* We compared using the log of opportunity count to whole number opportunity count in multiple datasets. We found the results for log of opportunity count to be consistently better, though small. -- Mimi McLaughlin, 2/9/2011

== Developer Requests ==

==== Store Converted Date and Converter Info ====

As a DataShop administrator, I'd like to see the converter information (version and date) stored in the database, so that I do not have to store that data manually in the Additional Notes field each time I load a dataset. -- Kyle, 8/5/2008

* DTD new fields:
** Store conversion and converter information in database (anything else?)
*** conversion_time
*** converter_info
* Email from Octav, 10/5/2007

I see there's also a note about the converter version in the Dataset
Info. Which is good, but it seems it's taken from the directory name
when I submitted the set. I don't know how reliable that is.  :-) It
would be better if it's taken from the new converter info field.

==== Convert from XML to tabbed-delimited format ====

* If the users agree that export format is valuable, then maybe if they could convert from XML to export format to see data in Excel, could look at Selection column and see blanks more easily. -- Jonathan Sewall, ET Mtg, 10/10/2007

==== Plug-ins (general issues) ====

* Please please support Ruby on Rails. -- Ben Shih, December 2008

==== Create UI to grant DataShop user roles ====

* Already tedious.
* Alida, User Meeting AAR on December 9, 2009

== Help ==

==== Specialize Label of Help Button ====
* Since this help is better than in most applications, it should say more than just 'Help'. -- Ken Koedinger & Ryan Baker, Team Mtg, May 30, 2008
** Ideas:
*** 'Page Help'
*** 'Help with this page'
*** 'Help with Learning Curve page' (Ken's favorite)
*** 'Help with this tool'

== Home Page ==

==== Redesign the Home Page ====

* In the menu of data sets at the top, include the N (=20 or as many as fit on the screen?) data sets that I have visited starting with the ones I've visited most recently. --[[User:Koedinger|Koedinger]] 16:16, 16 September 2009 (EDT)
** As of today, the menu shows the last 10 data sets, most recently visited at the top. I think the feature is good enough, but let's ask Ken --[[User:Bleber|Bleber]] 10:56, 6 August 2010 (EDT)
* There needs to be a better ordering for the datasets (DS364) -- but search/filtering/sorting would take care of that
* Maybe a search to filter the list of datasets since the list is so long. -- Brett Leber, 6/14/2007
* Going back to the home page always goes to 'My Datasets' (DS313) [fixed May 2012]
* Maybe show more high level stats on this page, like how many transactions [done Jan 2012], students, skill models
** "I am particularly looking for data from courses that contain large numbers of students (e.g., thousands or more). Does the Datashop have any such data? I perused the datasets but couldn't tell from the list how many students each course contains." - Kate Forbes-Riley, email on 8/9/2012
* Allow users to post and share project documentation (files, papers, other meta-info) -- Ruth Wylie, suggested during meeting on 8/4/2010. She had a file that is relevant to multiple datasets in her project.

==== News Feed ====
* Bruce McLaren, email, 4/20/2012
**I wonder whether it would be possible to have a scrolling "News" feed somewhere on the DataShop site that would keep researchers informed about what is happening with the DataShop. For instance, the "News" feed could always show the last time a data conversion finished, announce an upcoming workshop, or inform everyone of critical DataShop issues, such as the fact that the DataShop had a server go down recently (which I know caused you guys a lot of headaches - but which I didn't hear about until a couple weeks after it happened). This kind of thing could be a great communication tool and, as an added bonus for DataShop personnel, avoid lots of email with questions like "where is my data?" or "when is the next conversion going to finish?" Perhaps it would even be possible to have the data conversion routine automatically update the "News" feed each time it begins and/or finishes processing?
** Take it with a grain of salt -- I know you have lots of things on your plate -- but I have been in the situation often, especially just before and during my studies, where I wasn't sure what was going on with DataShop conversions and issues and had to track down someone -- typically Alida -- to figure things out. I have the advantage of sitting right next door to Alida, but I wonder how many other researchers within the PSLC, those not in close proximity to Alida, deal with this issue of not really knowing what is happening with the DataShop at any given time.
* Jonathan Sewall also requested a page that shows the status of the log conversion process, including how much data was processed and for which datasets

== Import ==
== Miscellaneous ==

==== Analyses by LearnLab ====

* Organize data by LearnLab, not by "data set". -- Ryan Baker, Aug 2008
* Also: Bob Hausmann, Sep 2008; Maxine Eskenazi, Sep 2008
* Essentially, current data sets become samples, but the top-level unit is the LearnLab. You can take every data set in a LearnLab together as a sample.
* Implies being able to run analyses across data sets, and export multiple data sets together; to create multi-data set samples
* As a user of DataShop, I would like to look at learning curves for all Algebra data together (for example), or export all Algebra data
* Important long-term, but is a lot of work -- in particular, we need to solve scalability issues first.

==== Save Settings Between Sessions ====
* It would be useful if DataShop could save settings between sessions. -- Bob Hausmann, User Meeting, 2/1/2008
** "I do a lot of redoing the same steps" (e.g., set cutoffs, select a KC model, select students).

==== Multiple steps per transaction ====

* Needed so that we do not have to create multiple transactions for the same actual action for Andes logs. -- Kurt van Lehn, Feb 2007

==== Demographic data ====

* This has been mentioned by NSF visitors, AB, ESL, and some researchers.
* Also mentioned at Winter Workshop 1/23/2008.
** Derek/Sue-mei: Student background information not in DataShop. Would like to see a student or set of students from a particular demographic, and view them across datasets!
* Note that Gail added demographic data to Additional Notes field on the Dataset Info page for many datasets. The idea here is to put that data into the database somewhere.

==== Single Sign On ====
* Michael Bett, email, 10/8/2007
* It would be nice if the following services have a single login account/password:
*# Theory Wiki
*# Learnlab.org
*# ESL's OSS
*# DataShop

==== Reveal unanonymized student IDs ====

As a researcher/PI performing research assistant tasks, I want to see easily the unanonymized student IDs of subjects in DataShop so that I can email my subjects telling them when to use my system.

* Ruth Wylie, July 3, 2008
* As the honest broker of the PSLC data, I have promised to not reveal the student IDs and to protect the identity of the students. This is part of the DataShop IRB. Therefore, I do not see this request as possible. [[User:Alida|Alida]] 09:53, 4 September 2009 (EDT)
** At some point, some coordination would be good with OLI's Digital Dashboard project that Marsha Lovett (and the OLI team and sometimes me) is working on. This is meant to provide usage information more quickly to instructors. It could also perhaps be used by researchers (with the right IRB rights) in situations like Ruth's.

==== Knight Timeline ====
* Developed by Andrea Knight, 2004

==== Buggy Skills ====
* Ken Koedinger, prototype walkthrough 9/11/2006

==== Confusion Matrix ====
* Brian MacWhinney, prototype walkthrough 9/11/2006

== Navigation Bar ==
==== Filter KCs by Name ====

As a researcher working with KCs, I want to filter KCs based on their names, so that I can...
* Vincent Aleven, Email, 2/3/2008
* "Since Alida said you cannot have two mechanisms for putting together your KC set (i.e., cannot have both the selecting-by-clicking and selecting-by-filtering), I would probably opt for the latter."
* Alida: I thought Vincent mentioned that he'd like to select which KCs are in a set by filtering on the name. Example: Include KCs with '*reason*' in the name and exclude KCs with '*given*' in the name.
* This could be an addition to our v3.0 KC-selection mechanism--filter by name.
* Vincent, Email, 5/6/2009: Expressed another need for this feature. Could just allow for a wider area and longer list so that more items can be checked at once. The number of characters we show right now is not enough because in many cases that number of characters is the same across many of the skills. Reference data set: Geometry CWCTC 2005-2006

* Status: Design Started

==== Facebook-style KC Selection ====

As a researcher working with KCs, I want to select KCs based on the learning curve thumbnail, so that I can see quickly which ones I'm interested in exploring more deeply.

* Feature already designed for v3.0, not implemented due to time constraints.
* Agreed this would be really useful. -- Kirsten Butcher, User Mtg, 1/31/2008
* Status: Guestimate: 20 days, need to revisit requirements document

==== Feedback after clicking a large sample on a large dataset ====

As a user of DataShop (first-time or not), I want some feedback and the ability to cancel after I do something that might take a long time (e.g., clicking "All Data" on a large dataset) so that I do not get stuck.

* Part of the Susan Goldman story
* After clicking a sample for a large dataset, there is no "Loading..." text, no feedback that the click was even registered by the app (besides the sometimes busy cursor and small browser "loading" text), nor the ability to cancel the action. 
* We will always have similar problems even if performance is improved, so providing feedback and the opportunity to cancel is critical.

==== Save Button in Problem Navigation Box ====

* Save buttons in the sidebar. -- Ken Koedinger, Mtg 2006
** Could also put one in the Problem selection box in the sidebar.

==== Make Nav Bar Wider ====
* Make the Sample name and description fields much wider. -- John LaPlante, email 7/10/2007

== New Visualizations/Reports ==

==== Student-KC Rollup ====
As a researcher, I want to see KCs rolled up by student, so that I can ...

* Vincent Aleven, User Mtg, 1/29/2008
** By Student-KC would be more useful than by Student-Problem
** Example: # Steps asking for a hint or error or what proportion had help
** How often bottom out hint occurs

==== Instructor Reports ====
* Phil said he received a lot of positive reactions to providing reports on units for instructors. -- Phil Pavlik, ET Mtg 10/10/2007

==== Manage Authorizations/Projects Page ====
* Lisa Anthony, email 10/23/2007
* Allow PI to change permissions on the datasets.
:"Actually, I couldn't see how to change permissions on the datasets from the website. Is this possible? If not, it might be a nice feature..."

==== Calculate Time Spent on Different Study Activities ====

As a researcher, I want to know how much time, on average, students spend on study activities, so that I can ...

* Bruce McLaren, Email, 4/7/2009
<blockquote>
For my most recent stoich study, Shawn and I are interested in calculating timing information such as: (a) how long students spent, on average, working on individual tutors (b) how long students spent, on average, on all items in an intervention (c) how long students worked, on average, on post-tests. 

Timing information is very commonly required for studies, and can be calculated from DataShop logs relatively easily, so even if we don't have it, might be worth considering. (And we don't want to re-invent the wheel, if you already have it or are planning it...)
</blockquote>

==== Incorrect Step Duration and Hint Step Duration ====

As a researcher, I want to be able to see total step duration if the student's first attempt was an incorrect attempt, and total step duration if the student's first attempt was a hint request, so that I can do some analyses that I can't do with "Error Step Duration".

* Bob Hausmann, email, 11/11/2008.
* Updated title and story with 'step duration' instead of 'time'. -- [[User:Alida|Alida]] 10:36, 4 September 2009 (EDT)

==== Grading ====

[[Grading]]

====Display number of steps and number of observations for skills====
* How and where to be determined by developers. -- Ken (entered by Mimi)

== Reports ==
=== Dataset Info ===

==== Pointers to Hard-copy Data ====
* Brett van de Sande, NSF Site Visit, 5/28/2008
* Pointers to hard-copy data such as paper tests and/or homework.  Include contact information.  It doesn't seem to make sense to scan a whole filing cabinet of paper if no one wants to look at it.  And any secondary researchers don't know about the filing cabinet to ask for it.

==== Sort Problem Breakdown Table ====

* Would like the ability to sort the table by clicking on the column headings of the Problem Breakdown Table on the Dataset Info Tab. -- Bruce McLaren, User Mtg, 11/5/2007

==== Rename dataset ====

As a researcher, I want to rename my dataset so that it makes more sense to other people. I also want to make sure the dataset doesn't become polluted later by new data not associated with my study.
* Ruth Wylie, July 3, 2008
* There are reasons she would want to do this (current name is worthless, other researchers might try her tutor and pollute her data) but also reasons for not doing it (log more data later).
* There are risks in changing a dataset name that might not be apparent. For example, if you want the new data in the same dataset. [[User:Alida|Alida]] 10:27, 4 September 2009 (EDT)

==== Average time per problem, average number of problems, total number of sections ====

In addition to showing student hours per dataset, it would be useful to know the average time spent per problem, average number of problems completed, and the total number of sections.
* Noboru Matsuda, June 18, 2010

=== Error Report ===

==== View By Student ====

* Would like to see what a couple of students saw in the feedback. -- Marsha Lovett, 10/11/2007

==== Export ====
* I would like the ability to export this data. -- John LaPlante, email thread 'Suggestions for Improvement' 7/10/2007
* Also interested in this feature idea. -- Bruce McLaren, User Mtg, 11/5/2007

==== Sort ====

* Was planned for but not implemented in v2.1 (estimated to be a 4 day task)
** By Correctness %, starting with the least correct
** By Hints %
** Step (or KC if view by KC)
** Number of Students
* Ability to sort problems by their average experienced position within the curriculum. -- Ken Koedinger, 02/16/2007
** Which problem did students most often experience first, then the one experience second most often, ...
* Order steps by the order they typically are executed by students. -- Ken Koedinger, email 11/7/2008
:"Searching through the steps in a problem to get a sense of what is going on is currently hard because the steps are ordered alphabetically, not by the order in which most students did them. While not all students do all steps in the same order, there is some regularity there. It would be quite useful if the steps could be ordered in a "typical order". This could be accomplished by using the time stamps (of the first (correct?) transaction?) for each step to determine rank order of the each step for each student in a problem and then for each problem average the rank order of each step across all students. Then arrange the steps in the Error Report by their average rank order -- that is, roughly speaking, the step that is most likely to be first across students (closest on average to first) goes first, the step with the next lowest rank goes next, etc."
* The capability to count the number of errors of each message type and sort in different ways, for instance by all errors that had no messages. -- Bruce McLaren, email 10/22/2007
:"This is an error analysis I recently did in Excel, using pivot tables, that might be handy if in the DataShop. This one is very important for tutors because the errors that occur most frequently, yet don't elicit messages to the students, are good candidates to become errors with feedback."

==== Show more than 500 problems ====

In the error report, can we see more than 500 problems? See set "Cog Model Discovery Experiment Spring 2010"
2/2888 selected.
(Showing the first 500)
-- Ken via email on 2/15/2011

=== Export ===

==== Include Skill Probability in transaction format ====
* A 3rd column named "KC Probability" next to the KC and KC Category columns, which would have the value from the probability attribute in the <skill> elements that generate the 2 existing columns. --Jonathan Sewall, email 12/2/2013

==== Include Step Start Time in transaction format ====

* The transaction-level export already includes problem start time; could it also include step start time? I can easily compute it myself, but it seems there's a specific algorithm that the student-step rollup uses, and it might be nice to include the same value here. --Ilya Goldin, email on 01/16/2012

==== Last attempt on step? column for transaction format ====

* Include a new column that shows whether the row is the last attempt on a step for a student or not. Could be 0 or 1 as value. Helpful for researchers who are doing grading of data. Transaction format. --Vincent Aleven, CTAT mtg 11/5/2010

==== Elapsed Time ====

* Include the elapsed time in preview and transaction export. It is more valuable than the transaction time as an absolute reference. Possible to keep both. --Ken Koedinger, Team Mtg 04/18/2008

==== SQL Format ====

* Option to export as an SQL file. -- Ken Koedinger, 03/26/2007, also brought up in June ET Meeting
** Ability to export an SQL dump of a dataset. --Kyle Cunningham, 04/03/2007

==== Specify Character for Blanks ====

* Ability to specify what character if any is used for blank. --Ryan Baker, email 8/9/2007
:"Not all tools handles TABTABTAB correctly on import. The period '.' is used to mean missing data in most stats packages. The word 'BLANK' is used in some other ones. Not an issue for Ryan as he wrote a preprocessor to convert blanks.

==== Opportunity (at KC) Count in Transaction Export ====
* Include the opportunity count in the transaction export (it's only in the student-step rollup) -- Noboru Matsuda, 10/08/2009
** Would be repetitive
** Would need one Opportunity column per KC

==== Export only rows that have KCs tagged ====
* Is it possible when a exporting dataset to include only the [transaction?] rows that have knowledge components tagged? And the same goes for KC models export, only include the items that have KC tagged? -- Hui Cheng, 01/19/2010
** We have the inverse of this option on the Performance Profiler, 'Include steps without a knowledge component', and with the Student-Problem export, 'Include Steps without KCs'.

==== Include Custom Fields in Student-Step Rollup ====
* Is it possible to include the custom field in the datashop [step] export? -- Hui Cheng, 03/01/2010
** "I am thinking about the student-step level export. We have a student from Statistics wanting to use assistment data from datashop. She wants to have problem set id (=curriculum id in datshop). For Assistment data, we decided to put problem set id in the custom field because in the Assistment a lot of problems are repeated in different problem sets. She needs data at the student-step level." (Hui email)
* Vote from Phil Pavlik too -- see [[Collected_User_Requests#Include_transaction_custom_fields_in_web_services_student-step_export|Phil's comment under Web Services]]

==== Don't duplicate rows in student-step format when not showing KCs ====
* If the checkbox to show knowledge components is not checked, maybe it doesn't make sense to show rows more than once if they have more than one KC associated with the step. (Mimi (and Brett) stumbled on this. 8/16/2010)

==== Student-Step Rollup include Success Column ====
* Step rollup, 1 if correct, 0 if incorrect/hint, blank otherwise call it Success. ~~ Ken Koedinger, DataShop Team Meeting, Oct 22, 2010

=== Learning Curve ===

==== Default sort by observation on LCPID ====

* Default sort by observation on LCPID. ~~ Ken Koedinger, DataShop Team Meeting, 10/22/2010

==== Purple Point ====
* Purple Point: if a point on the LC has more than one KC associated with it but you have drilled down to a given KC, then the blue line is off. We could put a purple point that takes this into account.
* Simpler thing: display a warning message that some points in the display are driven by other KCs
* Pearson may be interested
* This was mentioned during the PSLC Summer School 2010.
* For a step with multiple skills, attribute the error only to the skill with the highest overall error rate. ~~ Alida, meeting with Ken, November 18, 2010

==== Reduce Scrolling ====
* Add a forward and back button to the graph to reduce scrolling. -- John LaPlante, email 7/10/2007

:"The learning curve page could use a forward and back button to cycle through learning the learning curves. Going through them one by one requires a lot of scrolling."

==== Turn On Point Labels ====

* It would be nice to have the option to turn on point labels. It is nice that I can mouse over a point and view the data but it would be nicer if it appeared automatically. -- John LaPlante, email 7/10/2007

==== Option for Bigger Graph ====

* Allow user to see bigger graph. -- Derek Chan, Winter Workshop 1/23/2008
** Potential solution: enable user to set x, y scale manually

==== LC Normalize Scale of Thumbnails ====
* [[LC Normalize Scale of Thumbnails]]

==== Export Learning Curves ====

* Is it possible to export the learning curves themselves? I could do so simply by copying the point values one-by-one into Excel, which would be very doable, but easier would be if you could export the curves itself. (Not super important - I was thinking of making a single chart with multiple metrics although that may not pan out anyway because of different y axes needed.) -- Vincent Aleven, email 8/20/2013

=== Performance Profiler ===

==== Rename Performance Profiler ====
* John laPlante, email thread 'Suggestions for Improvement' 7/10/2007
** Did not use this report as thought it had something to do with improving the performance of the DataShop itself. This report might have been much better to use then the Error Report, would still need an export as using the data in a tabular form was still necessary. Note that the pivot tables created were added to the dataset (Pittsburgh Science of Learning Center Stoichiometry Study 1).
* Lisa Anthony, email 8/2008
** Didn't know to go to the report. Export would be useful.
** Needed a better definition of Error Rate with respect to Problem and Unit rows.

==== Export ====
* John laPlante (see comments in Rename Performance Profiler)
* Lisa Anthony (see comments in Rename Performance Profiler)
* Yes, I too can imagine wanting to export the results of a particular performance profiler output (i.e., to a table) so that I can graph it my own way. --[[User:Koedinger|Koedinger]] 16:24, 16 September 2009 (EDT)

==== Table View ====
* Add option to switch to a table view.
* Columns are: Problem Name, Steps, % incorrect, Incorrect Steps, % hint, Hint Steps, etc. include all values in pop-up.

==== Union of KCs/Problems/Students ====
* Allow user to get the union of KCs/Problems/Students etc so they can compare across samples easier. -- Kirsten Butcher, Winter Workshop 1/23/2008
:"It is difficult to compare performance profiler graphs across samples because the KCs (or problems, or whatever) aren't necessarily in both of those samples."

==== Show Details In Report ====
* Click on bar to see details in report and not just in pop-up. It disappears too quickly. -- Alida, Brett

==== Show More Information in the Graph ====
* Show more information in the graph: [Bruce M, User Mtg, 11/5/2007]
** Had drilled down by a certain skill - skill is not listed in the graph, user has to check the skill list on the LHS to see what skill was selected
* Maybe related to Bruce's "show more info in graph": show the actual value of the range variable. e.g., when range is error rate, show the error rate number somewhere (right now you can see, via mouse-over, the incorrect, hint, and correct percentages, but not the error rate) -- Brett
* Design idea to show # steps incorrect, # steps hint, # steps correct to clarify how the percentages are calculated. -- Alida, Brett

== Sample Selector ==

==== Sub-Samples ====

* Sub Samples would be helpful. -- John LaPlante, email 7/10/2007
:"A nice solution would be to have sub-samples where one property varies. When I'm doing this analysis, I've changed my sample many times, renaming it sometimes, tweaking it to get variations on the data. The samples are really useful but they could help me a lot more with this kind of experimentation."

==== Filter out students ====

As a researcher, I want to filter out test users (including myself) from my data so that I see less noise in the data.

* Ruth Wylie, July 3, 2008
* You can already filter out test users by using a test user id that starts with 'weirdCMUuser_xxx'. Then create a sample that excludes students with a name like 'Test_%'. --[[User:Alida|Alida]] 10:29, 4 September 2009 (EDT)

==== Filter by "Class" ====

As a researcher, I want to create samples based on "class" since class is how I've encoded my conditions.

* Maaike Waalkens, July 30, 2010
* This is what made sense using Mathtutor for tutor delivery.
* What other fields are we missing in the Sample Selector?

==== Filter by "Step" ====

As a researcher, I want to create samples based on "step" since I'm only interested in one particular step.

* Mimi McLaughlin, August 17, 2010

==== Filter by "Problem View" ====

As a researcher, I want to exclude transactions from my sample where problem view is greater than 1.

* Michael Yudelson and Summer School participant, August 8, 2012

==== Create Sample Automatically ====

* Would it be possible for me to get a random sample from the 'Bridge to Algebra 2006-2007' dataset of 100 students? I am having trouble looking at the data because it takes too long to load, and my adviser thought that was because the dataset was too large. ~~ DataShop User, 10/19/2010

== Web Services ==

==== Include transaction custom fields in web services student-step export ====

* "I noticed in the web services guide that cfs (which provides the custom fields) is not yet implemented for step roll-up tables. It is marked [coming soon] in the manual... I could write a workaround to pull in the transactions and lookup the custom fields, but I'd really rather not." -- Phil Pavlik, 4/27/2011

* "It would be best if the CF for step rollup was drawn from the primary transaction for the first attempt that is correct or incorrect. At least that seems like the generally best value. Basically, there may be many cases where the custom field is the same across all transactions for a step. In this case ... you could just use the first one since they are all the same." -- Phil Pavlik, 4/29/2011

==== Use Custom Fields Graphs/Reports ====
In Graphs

As a researcher creating custom fields and assigning values at the transaction level, I want DataShop to perform the aggregation to the step level so that I can do other things with my custom-field variable such as graph it. -- Ryan Baker, mtg w/Alida & Brett, 12/15/2008

Performance Profiler
* Use all discrete variables/custom fields on the left and all the continuous variables on the bottom of the Performance Profiler. -- [[User:Koedinger|Ken Koedinger]], DataShop Team Meeting, Sept 11, 2009

==== Ad-hoc queries ====

* Allow restricted filtering on steps and transactions as the next web service feature (after CFs), whatever they can filter on in the navigation boxes (User Meeting AAR, December 9, 2009)

==== Sample creation as a web service ====

* Sample creation is still too slow. (User Meeting AAR, December 9, 2009)

==== Ability to directly query the database ====

* I am looking for a unique identifier for student->problem-step->problem-view. I am able to compute this in R, but it would be better to be able to query the DataShop database to get this unique identifier instead of having to recreate DataShop (essentially) in R. -- Ilya Goldin, 5/21/2012

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]]
[[Category:Protected]]
[[Category:DataShop]]

Research Goals

2013-08-22T14:52:56Z

Alida: /* Research Goals */

== Researcher Types ==

# cognitive psychologist
# educational psychologist
# course developer
# user modeling researcher
# ITS/AIED researcher
# data miner/computer scientist
# psychometrician
# learning analytics researcher

== Research Goals ==

# test a theory of performance or learning

If, for example, you want to test whether a power law or exponential function better fits learning data, you might use DataShop data sets to do so as follows. You might export data from a dataset, e.g. [https://pslcdatashop.web.cmu.edu/DatasetInfo?datasetId=76 Geometry Area, 1996-1997]. and open it into a software package like Matlab or R, and use programs for modeling, such as generalized linear regression, to compare alternate versions of your theory. You can find instructions on how to read an exported file into R here.

# see the shape of a learning curve

A learning curve visualizes changes in student performance over time. In DataShop, it is typical to view such a curve aggregated over data for many students on many problems (though you can view as much or as little in the aggregate as you'd like). A good learning curve reveals improvement in student performance as opportunity count (practice with a given knowledge component, or skill) increases. See a visual explanation of a learning curve, view some learning curve examples (requires login), or watch a video on how to interpret learning curves.

# analyze my ed. tech. data to find ways to improve student learning

You can import your data into DataShop and use DataShop tools to find difficulty factors in your course, for instance,

Research Goals

2013-08-22T13:55:21Z

Alida: New page: == Researcher Types == # cognitive psychologist # educational psychologist # course developer # user modeling researcher # ITS/AIED researcher # data miner/computer scientist # psychomet...

== Researcher Types ==

# cognitive psychologist
# educational psychologist
# course developer
# user modeling researcher
# ITS/AIED researcher
# data miner/computer scientist
# psychometrician
# learning analytics researcher

== Research Goals ==

# test a theory of performance or learning

If, for example, you want to test whether a power law or exponential function better fits learning data, you might use DataShop data sets to do so as follows. You might export data from a dataset, e.g. Geometry Area, 1996-1997. and open it into a software package like Matlab or R, and use programs for modeling, such as generalized linear regression, to compare alternate versions of your theory. You can find instructions on how to read an exported file into R here.

# see the shape of a learning curve

A learning curve visualizes changes in student performance over time. In DataShop, it is typical to view such a curve aggregated over data for many students on many problems (though you can view as much or as little in the aggregate as you'd like). A good learning curve reveals improvement in student performance as opportunity count (practice with a given knowledge component, or skill) increases. See a visual explanation of a learning curve, view some learning curve examples (requires login), or watch a video on how to interpret learning curves.

# analyze my ed. tech. data to find ways to improve student learning

You can import your data into DataShop and use DataShop tools to find difficulty factors in your course, for instance,

DataShop Feature Wish List

2013-08-22T13:48:13Z

Alida: /* Prioritized Features */

Below are two lists of features. The features that we have prioritized and decided to implement are in the first, ordered list. The features that the DataShop team and community are discussing are in an unordered list on the page [[Collected User Requests]]. Click on a feature to get more information about it, such as a description, rationale for building it, and its status.

'''You can help!'''

If you think a feature is important, vote for it by putting your name to the right of the feature. Discuss the feature on the comments section of that feature's page. We'll use these votes and the dialogue that develops to prioritize features.

Don't see a feature on the prioritized list? There's a good chance it's on the '''[[Collected User Requests]]''' page. You can add feature ideas there and discuss the existing ones. Include your comment, name, and date to vote on feature ideas there.

'''Tip:''' Easily sign your username and the current date/time by inserting four tildes (<nowiki>~~~~</nowiki>); insert just your username with three tildes.

''See [[DataShop On-going Features|features we are building now]], and [[DataShop Completed Features|ones we have built]].''

== Prioritized Features ==

# [[Research Goals]]
# [[Speed up Aggregator]]
# [[Make Dataset Info Overview public]]
# [[Push Button Import]] — Carnegie Learning, John Stamper
# [[Web Services - Add Custom Fields]] (add custom fields to transactions) — Vote: Ryan Baker (1), John Stamper (1)
# [[Error Bars]] — Vote: Ken Koedinger (4)
# [[Add Latency Y-axis Options]] — Vote: Ken Koedinger (3)
# [[Adding Custom Fields through Web Application]] — Vote: Ryan Baker (2)
# [[Scalability]] — Vote: Ryan Baker (4)
# [[KC Model in Transaction Export]] — Vote: Vincent Aleven (2)
# [[Student Filter Dialog]]
# [[Milliseconds]] — Vote: [[User:Mostow|Mostow]] 23:07, 13 December 2011 (UTC)
# [[LFA-AFM on Sample]] — Vote: Ken Koedinger (5)
# [[Place for General Papers]]
# [[Performance Metrics]]
# [[Ability to display step-custom-fields in graphs]]
# [[Add Problem Content]]
# [[Dialogue Message Format]]
# [[Web application student-step format should be the same as web services version]] — Vote: Mike Yudelson

== Unordered Features ==
We have a long list of feature requests that have not been prioritized. Please see the
'''[[Collected User Requests]]'''.

== How to Request a Feature ==
* [[Write a User Story]]
* [[Create a Feature Page]]
* Add Link to Feature on [[Collected User Requests]] page.
 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop

2013-08-22T13:45:48Z

Alida: /* We need your help! */

The [https://pslcdatashop.web.cmu.edu PSLC DataShop] provides two main services to the learning science community:

* a central repository to secure and store research data
* a set of analysis and reporting tools

Researchers can rapidly access standard reports such as learning curves, as well as browse data using the interactive web application. To support other analyses, the DataShop can export data to a tab-delimited format that can then be used in statistical software and other analysis packages. Keep up-to-date on the latest DataShop news on our [http://pslcdatashop.org/about about] page.

== We need your help! ==

Please help us decide which features to add to DataShop, as well as the order we'll build them. The more votes a feature has, the sooner we'll build it. Go to [[DataShop Feature Wish List]] to join the conversation.

== Features We Are Building or Have Built ==
* [[DataShop 5.x Features]] — ''Jan 2011 – present''
* [[DataShop 4.x Features]] — ''Sep 2009 – Dec 2010''
* [[DataShop 3.x Features]] — ''Nov 2008 – Aug 2009''

== How to Request a Feature ==
* [[Write a User Story]]
* [[Create a Feature Page]]
* Add Link to Feature on [[Collected User Requests]] page.
 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]] 
See [[Web Services]]
[[Category:Protected]]
[[Category:DataShop]]

Collected User Requests

2012-04-30T17:56:41Z

Alida: /* Redesign the Home Page */

See prioritized items on [[DataShop Feature Wish List]].

== Annotations ==
* Some links from Ruogo Kang's (CMU PhD student, Sara Kiesler) recent talk. -- Ken, email, 8/24/2011
** http://vis.stanford.edu/papers/senseus
** http://vis.berkeley.edu/papers/commentspace/

==== Annotations on Transaction Level ====
* I have models which can annotate things like: gaming, bored, etc. on the transaction level. -- Ryan Baker, ET Mtg 12/5/2007

==== Annotations on Student Level ====
* Would annotate on student level. -- Ido Roll, User Meeting, 1/19/2009

==== Annotations on Pages ====
* See the cool thing created by Jeffery Heer where all the settings of the page were recorded with the comment. -- Ryan Baker, DS Team Mtg 5/23/2008

==== Dataset Discussion - Capture data-integrity issues ====
* As a stakeholder in the DataShop project, I want to capture and publicize the data-integrity issues discovered with data sets so that data is better documented (and so we've fulfilled a promise to our funders to better document data). -- Ken Koedinger, Team Meeting, 8/15/2009
* As a user of DataShop, I want to discuss datasets and have that discussion attached to the dataset so that others can comment and better understand any data-integrity issues I've found.

==== Linking to internal pages ====

* It would be handy if a link can be saved to any dataset, sample, page in the DataShop. -- [[Alida]], 10/18/2007
** Currently, https://pslc-qa.andrew.cmu.edu/datashop/DatasetInfo?datasetId=793 works if you are already logged in.

==== Have a link from the DataShop to the Theory Wiki (Dataset to Project Page) ====

* Can we link from the dataset to the project page on the Theory Wiki? In the pipeline have a clickable link to the project page (make project name clickable). -- Michael Bett, ET Mtg 11/14/2007
** Link to a dataset directly? Is that obvious to users? Click on dataset link -> log in -> redirected back to dataset. -- Brett Leber

== Data Format ==
==== Capture the question prompt and answer choices the student chose from ====
* As a research, I want to be able to identify steps based on the question prompt—not the difficult-to-understand step names that come from selection and action of my tutor—so that I can analyze the data more easily. For multiple choice questions, I also want to be able to see all of the choices that were available to the student. -- Eli Silk - February 1, 2011 (meeting with Brett and Ross Higashi of the FIRE project)
** Near-term solution is to create a table locally that maps steps to prompts
** Another solution is to ask CTAT team to modify their Flash components so that they log this information as custom fields
** Long-term solution is to make these fields into standard fields in the tutor message format
** In the email thread "Cognitive Tutor Development and Evaluation Requests", there is support for this general idea from Ken Koedinger, Albert Corbett, and Christian Schunn.
** Ken added that "Ideally, we may want to store any images that the student can see and where they reside on the screen ..."

== Data Modeling ==
=== Non-KC Modeling ===

==== Automatic Distillation ====
* As an educational data miner wishing to develop a machine learned model with PSLC data, I would like to be able to automatically distill data features (e.g. custom fields) commonly used in past educational data mining research for a new data set (see, for instance, Baker, Corbett, Roll, & Koedinger, 2008 in UMUAI) -- Ryan Baker, Summer 2008, Startup Memo
** Could be implemented as a plug-in
* Also interested in this feature idea. -- Dan Franklin, Oct 2008

==== Upload model and apply it to new data set ====

* As an EDM researcher, I would like to take a model, expressable as a linear formula on DataShop fields, or a simple code procedure (e.g. Bayesian Knowledge Tracing, which Ryan has code for), and apply it to a new data set, so that I can ... -- Ryan Baker, Sept 2008
* Also interested in this. -- Maxine Eskenazi, Sept 2008
* May work best as a plug-in
** Code to display GUI to choose which data sets to use, calls model code, re-import to DataShop
** Good to have a way to apply many models, as soon as you import a data set
* Phil has an idea that maybe fits within this one. Please move if there's a better category. -- Brett Leber
<blockquote>This [''transaction? kc? --ed.''] relabeling is really mostly about enabling modeling in DataShop right? With this in mind, I think that it is actually a higher priority to have model alternatives in DataShop.... E.g. Investigators should be able to give you chunks of Java code according to a certain specification, and DataShop should be then able to run these over datasets (perhaps after a certain series of QA occurs according to an SOP) when the investigator clicks some button in DataShop.... Obviously this is a much large project than adding columns, but it is also much more important in my mind. ''-- Phil Pavlik, email to Brett on 1/14/2009''</blockquote>
* Examples:
** Example: running gaming detector in multiple tutors and comparing gaming frequencies
** Example: applying Bayesian Knowledge Tracing to a new data set from the same LearnLab
** Example: applying Ben Shih's models to many data sets. Note that Ben Shih should be included in design of this feature; he is interested, and has a lot of good ideas.

==== Add Different Predicted Values ====
* Would also like to add statistics, different predicted values than what LFA produces. -- Ken Koedinger, ET Meeting, 10/10/2007

==== Bayesian Knowledge Tracing ====
* Bayesian Knowledge-Tracing built into DataShop like LFA is. -- Ryan Baker, Startup Memo, Summer 2008

==== Richer statistics for KC modeling ====

* In addition, to the model stats and estimates generated for learning factor models, we should also create difficulty factor models (i.e., ones with "Slope" parameter). The latter is particularly relevant for the Unique-Step model where the slope parameter is meaningless (but still counts against the BIC value). -- Ken Koedinger, Email "new feature request", 1/22/2009
** Relatedly, we should report significance values on the Slope parameters -- that is, when is the Slope significantly different from 0.
** The KC models page perhaps should also report the log-likelihood and number of parameters (in addition to BIC) and leave out AIC. We might also consider other metrics of model generality, like the "adjusted R2" (if I have this name right -- Joe Beck mentioned in the Assistments meeting yesterday).
** These changes will be part of meeting the CMDM goal of improvement in (or at least demonstrate acceptability of) the cognitive models in 90+ units in our LearnLab courses (or affiliates).

=== KC Modeling ===

==== LFA/AFM: Check if enough memory using formula ====
* The LFA/AFM code could calculate how much RAM would be needed to run the algorithm on a given skill model using the formula provided by Hao. This formula is based on the number of transactions, number of students and number of skills. Right now it will not schedule itself to run on a model with over 300 skills, though there is a manual override. [[User:Alida|Alida]] 13:35, 29 November 2010 (EST)

==== Create KC Models through Web Services ====
* For John Stamper's CMDM project, it would be nice to automatically update KC Models through web services. -- [[User:Koedinger|Ken Koedinger]], DataShop Team Meeting, Sept 11, 2009

==== Automatically discovering new KC model ====

* Would it be possible to run some code (perhaps Hao's KC model selection code, perhaps something else generated by CMDM thrust) to find new best KC model. -- Vincent Aleven, Sept 2008
* As a learning sciences researcher, I would like DataShop to discover a new/better KC model for me.
* Could be done as a plug-in

==== Generate new KC Models with LFA ====
* Not sure who asked for this.
* It would be nice to generate new KC Models with Hao's LFA code
* Would need to specify factors.
* Ideas on where this could run?
** On a separate server? Request it to be run, specify duration. Have separate server queue up requests, email user when done.
** In Java Applet on client machine? -- Phil Pavlik

==== Same Skill Twice on Same Step ====
* Would like to be able to apply the same skill to a step twice during a KC Model Import. -- Ken Koedinger, email, 2/4/2009

==== Save KC Model Import Files ====
* KC Model Import - save the file used to create the KCMs in case we need to recreate them. -- Ken Koedinger, email 3/4/2009

==== Log Likelihood and MAD ====
* Log Likelihood, MAD (mean absolute deviation) problem, MAD step (store and show) -- Hao Cen
** This is a variation on "Richer statistics for KC modeling" above. Probably should be merged. - Ken Koedinger

==== Better naming for KCs in auto-generated Unique-Step KCM ====

As a researcher, I want the KCs in the Unique-Step model to have better names than KC1, KC2, etc, so that I can easily tell which generated KCs go with which unique step.

* Hui Cheng (Email 1/20/2009), Ken Koedinger (Email 1/22/2009)
* Could you put this in your new feature request list: could the “Unique-step model” be better labeled then just “KC1”, “KC2” and etc? For example, for Assistments data, you could use part of the “Step Name”. -- Hui Cheng, Email 1/20/2009
* But, anything is better than "KC". -- Ken Koedinger, email, 1/22/2009
<blockquote>A simple alternative, that preserves uniqueness and addresses length, is to concatenate: 1) the first K letters of the step name 2) a unique numerical increment (same as the "3" in "KC3"). Note that (2) guarantees uniqueness just as it does in the current "KC<num>" scheme. Or perhaps better given that step names are often scoped within problems, is to concatenate: 1) the first L letters of the problem name 2) the first M letters of the step name 3) a unique numerical increment (just like the "3" in "KC3") I think K or L+M should be as big as possible without making the KC names indistinguishable (because they run off the right margin) in the KC list on the Learning Curve and other pages. </blockquote>

==== Visualize Learning Curve Split ====
* Be able to visualize a learning curve split into 2 based on a specification of a subset of problems. -- Albert Corbett, Math CCM, November 2008
* Harder: make me a new KCM out of it. -- Ken Koedinger, Team Mtg, Dec 5, 2008, while trying to describe Albert's request to Alida

==== Statistical Significance ====
* Can DataShop determine if the difference between conditions or learning curves is statistically significant? -- general theme at workshop, probably mentioned by Bob Hausmann in his talk, Winter Workshop 1/23/2008
** Can't do it yet in DataShop, but I can show you how to do it in R (or SPSS...) after you've exported the data -- export the "student-step rollup" than the whole transaction table. --[[User:Koedinger|Koedinger]] 16:30, 16 September 2009 (EDT)
*** This comment perhaps belongs (exists?) elsewhere: The current student-step rollup export (relly, all exports) should be such that I can immediately load it into R (and other packages) without error. Now errors occur, for instance, because there are "#" in the variable names i the student-step rollup. However, it is currently a road-block for helping folks like Bob do analyzes they want to do. --[[User:Koedinger|Koedinger]] 16:30, 16 September 2009 (EDT)
*** See [[Condition in Student-Step Rollup]] -- [[User:Alida|Alida]] 10:35, 17 September 2009 (EDT)

==== Split and Merge Skills ====

* Hand searches though a p-matrix for a dataset to split and merge skills. (Pie in the Sky) -- Ken Koedinger, Team Mtg, 02/22/2008

==== Notes on new KCMs ====

* It would be good if I could add a note to a KC model that was newly imported. -- Noboru Matsuda, email, Nov 19, 2009

==== Display Learning Curves Grouped by Interestingness ====

* The page displaying all the learning curves today seems to be alphabetically sorted by KC name, which is not necessarily meaningful.
* An alternative presentation is to group the curves into 4 sets, breaking up the page. Set 1 has curves that contain significant spikes, and therefore seem to be "low-hanging fruit" for purposes of breaking up into KCs. Set 2 has curves with few spikes, but they have a long X axis, suggesting that students are presented with too many opportunities to acquire those KCs. Set 3 has the "good" curves, i.e., nicely decreasing curves that are not too long. Set 4 is "other". -- [http://www.pitt.edu/~goldin Ilya Goldin] 7 December 2009

==== Order KC models according to AIC====
* This is based on results from multiple dataset analyses that compared AIC, BIC and loglikelihood to cross validation RMSE. -- Mimi McLaughlin, 2/9/2011

====Use log of opportunity count for AIC and BIC calculations====
* We compared using the log of opportunity count to whole number opportunity count in multiple datasets. We found the results for log of opportunity count to be consistently better, though small. -- Mimi McLaughlin, 2/9/2011

== Developer Requests ==

==== Store Converted Date and Converter Info ====

As a DataShop administrator, I'd like to see the converter information (version and date) stored in the database, so that I do not have to store that data manually in the Additional Notes field each time I load a dataset. -- Kyle, 8/5/2008

* DTD new fields:
** Store conversion and converter information in database (anything else?)
*** conversion_time
*** converter_info
* Email from Octav, 10/5/2007

I see there's also a note about the converter version in the Dataset
Info. Which is good, but it seems it's taken from the directory name
when I submitted the set. I don't know how reliable that is.  :-) It
would be better if it's taken from the new converter info field.

==== Convert from XML to tabbed-delimited format ====

* If the users agree that export format is valuable, then maybe if they could convert from XML to export format to see data in Excel, could look at Selection column and see blanks more easily. -- Jonathan Sewall, ET Mtg, 10/10/2007

==== Plug-ins (general issues) ====

* Please please support Ruby on Rails. -- Ben Shih, December 2008

==== Create UI to grant DataShop user roles ====

* Already tedious.
* Alida, User Meeting AAR on December 9, 2009

== Help ==

==== Specialize Label of Help Button ====
* Since this help is better than in most applications, it should say more than just 'Help'. -- Ken Koedinger & Ryan Baker, Team Mtg, May 30, 2008
** Ideas:
*** 'Page Help'
*** 'Help with this page'
*** 'Help with Learning Curve page' (Ken's favorite)
*** 'Help with this tool'

== Home Page ==

==== Redesign the Home Page ====

* In the menu of data sets at the top, include the N (=20 or as many as fit on the screen?) data sets that I have visited starting with the ones I've visited most recently. --[[User:Koedinger|Koedinger]] 16:16, 16 September 2009 (EDT)
** As of today, the menu shows the last 10 data sets, most recently visited at the top. I think the feature is good enough, but let's ask Ken --[[User:Bleber|Bleber]] 10:56, 6 August 2010 (EDT)
* There needs to be a better ordering for the datasets (DS364)
* Maybe a search to filter the list of datasets since the list is so long. -- Brett Leber, 6/14/2007
* Going back to the home page always goes to 'My Datasets' (DS313)
* Maybe show more high level stats on this page, like how many transactions [done Jan 2012], students, skill models
* Allow users to post and share project documentation (files, papers, other meta-info) -- Ruth Wylie, suggested during meeting on 8/4/2010. She had a file that is relevant to multiple datasets in her project.

==== News Feed ====
* Bruce McLaren, email, 4/20/2012
**I wonder whether it would be possible to have a scrolling "News" feed somewhere on the DataShop site that would keep researchers informed about what is happening with the DataShop. For instance, the "News" feed could always show the last time a data conversion finished, announce an upcoming workshop, or inform everyone of critical DataShop issues, such as the fact that the DataShop had a server go down recently (which I know caused you guys a lot of headaches - but which I didn't hear about until a couple weeks after it happened). This kind of thing could be a great communication tool and, as an added bonus for DataShop personnel, avoid lots of email with questions like "where is my data?" or "when is the next conversion going to finish?" Perhaps it would even be possible to have the data conversion routine automatically update the "News" feed each time it begins and/or finishes processing?
** Take it with a grain of salt -- I know you have lots of things on your plate -- but I have been in the situation often, especially just before and during my studies, where I wasn't sure what was going on with DataShop conversions and issues and had to track down someone -- typically Alida -- to figure things out. I have the advantage of sitting right next door to Alida, but I wonder how many other researchers within the PSLC, those not in close proximity to Alida, deal with this issue of not really knowing what is happening with the DataShop at any given time.

== Import ==
== Miscellaneous ==

==== Analyses by LearnLab ====

* Organize data by LearnLab, not by "data set". -- Ryan Baker, Aug 2008
* Also: Bob Hausmann, Sep 2008; Maxine Eskenazi, Sep 2008
* Essentially, current data sets become samples, but the top-level unit is the LearnLab. You can take every data set in a LearnLab together as a sample.
* Implies being able to run analyses across data sets, and export multiple data sets together; to create multi-data set samples
* As a user of DataShop, I would like to look at learning curves for all Algebra data together (for example), or export all Algebra data
* Important long-term, but is a lot of work -- in particular, we need to solve scalability issues first.

==== Save Settings Between Sessions ====
* It would be useful if DataShop could save settings between sessions. -- Bob Hausmann, User Meeting, 2/1/2008
** "I do a lot of redoing the same steps" (e.g., set cutoffs, select a KC model, select students).

==== Multiple steps per transaction ====

* Needed so that we do not have to create multiple transactions for the same actual action for Andes logs. -- Kurt van Lehn, Feb 2007

==== Demographic data ====

* This has been mentioned by NSF visitors, AB, ESL, and some researchers.
* Also mentioned at Winter Workshop 1/23/2008.
** Derek/Sue-mei: Student background information not in DataShop. Would like to see a student or set of students from a particular demographic, and view them across datasets!
* Note that Gail added demographic data to Additional Notes field on the Dataset Info page for many datasets. The idea here is to put that data into the database somewhere.

==== Single Sign On ====
* Michael Bett, email, 10/8/2007
* It would be nice if the following services have a single login account/password:
*# Theory Wiki
*# Learnlab.org
*# ESL's OSS
*# DataShop

==== Reveal unanonymized student IDs ====

As a researcher/PI performing research assistant tasks, I want to see easily the unanonymized student IDs of subjects in DataShop so that I can email my subjects telling them when to use my system.

* Ruth Wylie, July 3, 2008
* As the honest broker of the PSLC data, I have promised to not reveal the student IDs and to protect the identity of the students. This is part of the DataShop IRB. Therefore, I do not see this request as possible. [[User:Alida|Alida]] 09:53, 4 September 2009 (EDT)
** At some point, some coordination would be good with OLI's Digital Dashboard project that Marsha Lovett (and the OLI team and sometimes me) is working on. This is meant to provide usage information more quickly to instructors. It could also perhaps be used by researchers (with the right IRB rights) in situations like Ruth's.

==== Knight Timeline ====
* Developed by Andrea Knight, 2004

==== Buggy Skills ====
* Ken Koedinger, prototype walkthrough 9/11/2006

==== Confusion Matrix ====
* Brian MacWhinney, prototype walkthrough 9/11/2006

== Navigation Bar ==
==== Filter KCs by Name ====

As a researcher working with KCs, I want to filter KCs based on their names, so that I can...
* Vincent Aleven, Email, 2/3/2008
* "Since Alida said you cannot have two mechanisms for putting together your KC set (i.e., cannot have both the selecting-by-clicking and selecting-by-filtering), I would probably opt for the latter."
* Alida: I thought Vincent mentioned that he'd like to select which KCs are in a set by filtering on the name. Example: Include KCs with '*reason*' in the name and exclude KCs with '*given*' in the name.
* This could be an addition to our v3.0 KC-selection mechanism--filter by name.
* Vincent, Email, 5/6/2009: Expressed another need for this feature. Could just allow for a wider area and longer list so that more items can be checked at once. The number of characters we show right now is not enough because in many cases that number of characters is the same across many of the skills. Reference data set: Geometry CWCTC 2005-2006

* Status: Design Started

==== Facebook-style KC Selection ====

As a researcher working with KCs, I want to select KCs based on the learning curve thumbnail, so that I can see quickly which ones I'm interested in exploring more deeply.

* Feature already designed for v3.0, not implemented due to time constraints.
* Agreed this would be really useful. -- Kirsten Butcher, User Mtg, 1/31/2008
* Status: Guestimate: 20 days, need to revisit requirements document

==== Feedback after clicking a large sample on a large dataset ====

As a user of DataShop (first-time or not), I want some feedback and the ability to cancel after I do something that might take a long time (e.g., clicking "All Data" on a large dataset) so that I do not get stuck.

* Part of the Susan Goldman story
* After clicking a sample for a large dataset, there is no "Loading..." text, no feedback that the click was even registered by the app (besides the sometimes busy cursor and small browser "loading" text), nor the ability to cancel the action. 
* We will always have similar problems even if performance is improved, so providing feedback and the opportunity to cancel is critical.

==== Save Button in Problem Navigation Box ====

* Save buttons in the sidebar. -- Ken Koedinger, Mtg 2006
** Could also put one in the Problem selection box in the sidebar.

==== Make Nav Bar Wider ====
* Make the Sample name and description fields much wider. -- John LaPlante, email 7/10/2007

== New Visualizations/Reports ==

==== Student-KC Rollup ====
As a researcher, I want to see KCs rolled up by student, so that I can ...

* Vincent Aleven, User Mtg, 1/29/2008
** By Student-KC would be more useful than by Student-Problem
** Example: # Steps asking for a hint or error or what proportion had help
** How often bottom out hint occurs

==== Instructor Reports ====
* Phil said he received a lot of positive reactions to providing reports on units for instructors. -- Phil Pavlik, ET Mtg 10/10/2007

==== Manage Authorizations/Projects Page ====
* Lisa Anthony, email 10/23/2007
* Allow PI to change permissions on the datasets.
:"Actually, I couldn't see how to change permissions on the datasets from the website. Is this possible? If not, it might be a nice feature..."

==== Calculate Time Spent on Different Study Activities ====

As a researcher, I want to know how much time, on average, students spend on study activities, so that I can ...

* Bruce McLaren, Email, 4/7/2009
<blockquote>
For my most recent stoich study, Shawn and I are interested in calculating timing information such as: (a) how long students spent, on average, working on individual tutors (b) how long students spent, on average, on all items in an intervention (c) how long students worked, on average, on post-tests. 

Timing information is very commonly required for studies, and can be calculated from DataShop logs relatively easily, so even if we don't have it, might be worth considering. (And we don't want to re-invent the wheel, if you already have it or are planning it...)
</blockquote>

==== Incorrect Step Duration and Hint Step Duration ====

As a researcher, I want to be able to see total step duration if the student's first attempt was an incorrect attempt, and total step duration if the student's first attempt was a hint request, so that I can do some analyses that I can't do with "Error Step Duration".

* Bob Hausmann, email, 11/11/2008.
* Updated title and story with 'step duration' instead of 'time'. -- [[User:Alida|Alida]] 10:36, 4 September 2009 (EDT)

==== Grading ====

[[Grading]]

====Display number of steps and number of observations for skills====
* How and where to be determined by developers. -- Ken (entered by Mimi)

== Reports ==
=== Dataset Info ===

==== Pointers to Hard-copy Data ====
* Brett van de Sande, NSF Site Visit, 5/28/2008
* Pointers to hard-copy data such as paper tests and/or homework.  Include contact information.  It doesn't seem to make sense to scan a whole filing cabinet of paper if no one wants to look at it.  And any secondary researchers don't know about the filing cabinet to ask for it.

==== Sort Problem Breakdown Table ====

* Would like the ability to sort the table by clicking on the column headings of the Problem Breakdown Table on the Dataset Info Tab. -- Bruce McLaren, User Mtg, 11/5/2007

==== Rename dataset ====

As a researcher, I want to rename my dataset so that it makes more sense to other people. I also want to make sure the dataset doesn't become polluted later by new data not associated with my study.
* Ruth Wylie, July 3, 2008
* There are reasons she would want to do this (current name is worthless, other researchers might try her tutor and pollute her data) but also reasons for not doing it (log more data later).
* There are risks in changing a dataset name that might not be apparent. For example, if you want the new data in the same dataset. [[User:Alida|Alida]] 10:27, 4 September 2009 (EDT)

==== Average time per problem, average number of problems, total number of sections ====

In addition to showing student hours per dataset, it would be useful to know the average time spent per problem, average number of problems completed, and the total number of sections.
* Noboru Matsuda, June 18, 2010

=== Error Report ===

==== View By Student ====

* Would like to see what a couple of students saw in the feedback. -- Marsha Lovett, 10/11/2007

==== Export ====
* I would like the ability to export this data. -- John LaPlante, email thread 'Suggestions for Improvement' 7/10/2007
* Also interested in this feature idea. -- Bruce McLaren, User Mtg, 11/5/2007

==== Sort ====

* Was planned for but not implemented in v2.1 (estimated to be a 4 day task)
** By Correctness %, starting with the least correct
** By Hints %
** Step (or KC if view by KC)
** Number of Students
* Ability to sort problems by their average experienced position within the curriculum. -- Ken Koedinger, 02/16/2007
** Which problem did students most often experience first, then the one experience second most often, ...
* Order steps by the order they typically are executed by students. -- Ken Koedinger, email 11/7/2008
:"Searching through the steps in a problem to get a sense of what is going on is currently hard because the steps are ordered alphabetically, not by the order in which most students did them. While not all students do all steps in the same order, there is some regularity there. It would be quite useful if the steps could be ordered in a "typical order". This could be accomplished by using the time stamps (of the first (correct?) transaction?) for each step to determine rank order of the each step for each student in a problem and then for each problem average the rank order of each step across all students. Then arrange the steps in the Error Report by their average rank order -- that is, roughly speaking, the step that is most likely to be first across students (closest on average to first) goes first, the step with the next lowest rank goes next, etc."
* The capability to count the number of errors of each message type and sort in different ways, for instance by all errors that had no messages. -- Bruce McLaren, email 10/22/2007
:"This is an error analysis I recently did in Excel, using pivot tables, that might be handy if in the DataShop. This one is very important for tutors because the errors that occur most frequently, yet don't elicit messages to the students, are good candidates to become errors with feedback."

==== Show more than 500 problems ====

In the error report, can we see more than 500 problems? See set "Cog Model Discovery Experiment Spring 2010"
2/2888 selected.
(Showing the first 500)
-- Ken via email on 2/15/2011

=== Export ===

==== Include Step Start Time in transaction format ====

* The transaction-level export already includes problem start time; could it also include step start time? I can easily compute it myself, but it seems there's a specific algorithm that the student-step rollup uses, and it might be nice to include the same value here. --Ilya Goldin, email on 01/16/2012

==== Last attempt on step? column for transaction format ====

* Include a new column that shows whether the row is the last attempt on a step for a student or not. Could be 0 or 1 as value. Helpful for researchers who are doing grading of data. Transaction format. --Vincent Aleven, CTAT mtg 11/5/2010

==== Elapsed Time ====

* Include the elapsed time in preview and transaction export. It is more valuable than the transaction time as an absolute reference. Possible to keep both. --Ken Koedinger, Team Mtg 04/18/2008

==== SQL Format ====

* Option to export as an SQL file. -- Ken Koedinger, 03/26/2007, also brought up in June ET Meeting
** Ability to export an SQL dump of a dataset. --Kyle Cunningham, 04/03/2007

==== Specify Character for Blanks ====

* Ability to specify what character if any is used for blank. --Ryan Baker, email 8/9/2007
:"Not all tools handles TABTABTAB correctly on import. The period '.' is used to mean missing data in most stats packages. The word 'BLANK' is used in some other ones. Not an issue for Ryan as he wrote a preprocessor to convert blanks.

==== Opportunity (at KC) Count in Transaction Export ====
* Include the opportunity count in the transaction export (it's only in the student-step rollup) -- Noboru Matsuda, 10/08/2009
** Would be repetitive
** Would need one Opportunity column per KC

==== Export only rows that have KCs tagged ====
* Is it possible when a exporting dataset to include only the [transaction?] rows that have knowledge components tagged? And the same goes for KC models export, only include the items that have KC tagged? -- Hui Cheng, 01/19/2010
** We have the inverse of this option on the Performance Profiler, 'Include steps without a knowledge component', and with the Student-Problem export, 'Include Steps without KCs'.

==== Include Custom Fields in Student-Step Rollup ====
* Is it possible to include the custom field in the datashop [step] export? -- Hui Cheng, 03/01/2010
** "I am thinking about the student-step level export. We have a student from Statistics wanting to use assistment data from datashop. She wants to have problem set id (=curriculum id in datshop). For Assistment data, we decided to put problem set id in the custom field because in the Assistment a lot of problems are repeated in different problem sets. She needs data at the student-step level." (Hui email)
* Vote from Phil Pavlik too -- see [[Collected_User_Requests#Include_transaction_custom_fields_in_web_services_student-step_export|Phil's comment under Web Services]]

==== Don't duplicate rows in student-step format when not showing KCs ====
* If the checkbox to show knowledge components is not checked, maybe it doesn't make sense to show rows more than once if they have more than one KC associated with the step. (Mimi (and Brett) stumbled on this. 8/16/2010)

==== Student-Step Rollup include Success Column ====
* Step rollup, 1 if correct, 0 if incorrect/hint, blank otherwise call it Success. ~~ Ken Koedinger, DataShop Team Meeting, Oct 22, 2010

=== Learning Curve ===

==== Default sort by observation on LCPID ====

* Default sort by observation on LCPID. ~~ Ken Koedinger, DataShop Team Meeting, 10/22/2010

==== Purple Point ====
* Purple Point: if a point on the LC has more than one KC associated with it but you have drilled down to a given KC, then the blue line is off. We could put a purple point that takes this into account.
* Simpler thing: display a warning message that some points in the display are driven by other KCs
* Pearson may be interested
* This was mentioned during the PSLC Summer School 2010.
* For a step with multiple skills, attribute the error only to the skill with the highest overall error rate. ~~ Alida, meeting with Ken, November 18, 2010

==== Reduce Scrolling ====
* Add a forward and back button to the graph to reduce scrolling. -- John LaPlante, email 7/10/2007

:"The learning curve page could use a forward and back button to cycle through learning the learning curves. Going through them one by one requires a lot of scrolling."

==== Turn On Point Labels ====

* It would be nice to have the option to turn on point labels. It is nice that I can mouse over a point and view the data but it would be nicer if it appeared automatically. -- John LaPlante, email 7/10/2007

==== Option for Bigger Graph ====

* Allow user to see bigger graph. -- Derek Chan, Winter Workshop 1/23/2008
** Potential solution: enable user to set x, y scale manually

==== LC Normalize Scale of Thumbnails ====
* [[LC Normalize Scale of Thumbnails]]

=== Performance Profiler ===

==== Rename Performance Profiler ====
* John laPlante, email thread 'Suggestions for Improvement' 7/10/2007
** Did not use this report as thought it had something to do with improving the performance of the DataShop itself. This report might have been much better to use then the Error Report, would still need an export as using the data in a tabular form was still necessary. Note that the pivot tables created were added to the dataset (Pittsburgh Science of Learning Center Stoichiometry Study 1).
* Lisa Anthony, email 8/2008
** Didn't know to go to the report. Export would be useful.
** Needed a better definition of Error Rate with respect to Problem and Unit rows.

==== Export ====
* John laPlante (see comments in Rename Performance Profiler)
* Lisa Anthony (see comments in Rename Performance Profiler)
* Yes, I too can imagine wanting to export the results of a particular performance profiler output (i.e., to a table) so that I can graph it my own way. --[[User:Koedinger|Koedinger]] 16:24, 16 September 2009 (EDT)

==== Table View ====
* Add option to switch to a table view.
* Columns are: Problem Name, Steps, % incorrect, Incorrect Steps, % hint, Hint Steps, etc. include all values in pop-up.

==== Union of KCs/Problems/Students ====
* Allow user to get the union of KCs/Problems/Students etc so they can compare across samples easier. -- Kirsten Butcher, Winter Workshop 1/23/2008
:"It is difficult to compare performance profiler graphs across samples because the KCs (or problems, or whatever) aren't necessarily in both of those samples."

==== Show Details In Report ====
* Click on bar to see details in report and not just in pop-up. It disappears too quickly. -- Alida, Brett

==== Show More Information in the Graph ====
* Show more information in the graph: [Bruce M, User Mtg, 11/5/2007]
** Had drilled down by a certain skill - skill is not listed in the graph, user has to check the skill list on the LHS to see what skill was selected
* Maybe related to Bruce's "show more info in graph": show the actual value of the range variable. e.g., when range is error rate, show the error rate number somewhere (right now you can see, via mouse-over, the incorrect, hint, and correct percentages, but not the error rate) -- Brett
* Design idea to show # steps incorrect, # steps hint, # steps correct to clarify how the percentages are calculated. -- Alida, Brett

== Sample Selector ==

==== Sub-Samples ====

* Sub Samples would be helpful. -- John LaPlante, email 7/10/2007
:"A nice solution would be to have sub-samples where one property varies. When I'm doing this analysis, I've changed my sample many times, renaming it sometimes, tweaking it to get variations on the data. The samples are really useful but they could help me a lot more with this kind of experimentation."

==== Filter out students ====

As a researcher, I want to filter out test users (including myself) from my data so that I see less noise in the data.

* Ruth Wylie, July 3, 2008
* You can already filter out test users by using a test user id that starts with 'weirdCMUuser_xxx'. Then create a sample that excludes students with a name like 'Test_%'. --[[User:Alida|Alida]] 10:29, 4 September 2009 (EDT)

==== Filter by "Class" ====

As a researcher, I want to create samples based on "class" since class is how I've encoded my conditions.

* Maaike Waalkens, July 30, 2010
* This is what made sense using Mathtutor for tutor delivery.
* What other fields are we missing in the Sample Selector?

==== Filter by "Step" ====

As a researcher, I want to create samples based on "step" since I'm only interested in one particular step.

* Mimi McLaughlin, August 17, 2010

==== Create Sample Automatically ====

* Would it be possible for me to get a random sample from the 'Bridge to Algebra 2006-2007' dataset of 100 students? I am having trouble looking at the data because it takes too long to load, and my adviser thought that was because the dataset was too large. ~~ DataShop User, 10/19/2010

== Web Services ==

==== Include transaction custom fields in web services student-step export ====

* "I noticed in the web services guide that cfs (which provides the custom fields) is not yet implemented for step roll-up tables. It is marked [coming soon] in the manual... I could write a workaround to pull in the transactions and lookup the custom fields, but I'd really rather not." -- Phil Pavlik, 4/27/2011

* "It would be best if the CF for step rollup was drawn from the primary transaction for the first attempt that is correct or incorrect. At least that seems like the generally best value. Basically, there may be many cases where the custom field is the same across all transactions for a step. In this case ... you could just use the first one since they are all the same." -- Phil Pavlik, 4/29/2011

==== Use Custom Fields Graphs/Reports ====
In Graphs

As a researcher creating custom fields and assigning values at the transaction level, I want DataShop to perform the aggregation to the step level so that I can do other things with my custom-field variable such as graph it. -- Ryan Baker, mtg w/Alida & Brett, 12/15/2008

Performance Profiler
* Use all discrete variables/custom fields on the left and all the continuous variables on the bottom of the Performance Profiler. -- [[User:Koedinger|Ken Koedinger]], DataShop Team Meeting, Sept 11, 2009

==== Ad-hoc queries ====

* Allow restricted filtering on steps and transactions as the next web service feature (after CFs), whatever they can filter on in the navigation boxes (User Meeting AAR, December 9, 2009)

==== Sample creation as a web service ====

* Sample creation is still too slow. (User Meeting AAR, December 9, 2009)

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 5.x Features

2012-04-30T17:47:27Z

Alida: /* v5.3 April 2012 */

== v5.0 May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

== v5.1 October 2011 ==
# [[Add Problem View to Export and Import]]
# [[KC Model Sort]]
# [[Order KCs by BIC on Primary Model]]
# [[Citations]]
# Changes to Cross Validation

== v5.2 January 2012 ==
# [[Terms of Use]]
# Project pages and project PIs

== v5.3 May 2012 ==
# [[Other Analysis Outputs]]
# [[Access Requests]]

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 5.x Features

2012-04-30T17:43:58Z

Alida: /* v5.0 April/May 2011 */

== v5.0 May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

== v5.1 October 2011 ==
# [[Add Problem View to Export and Import]]
# [[KC Model Sort]]
# [[Order KCs by BIC on Primary Model]]
# [[Citations]]
# Changes to Cross Validation

== v5.2 January 2012 ==
# [[Terms of Use]]
# Project pages and project PIs

== v5.3 April 2012 ==
# [[Other Analysis Outputs]]
# [[Access Requests]]

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

Create a Feature Page

2012-04-26T14:20:56Z

Alida:

'''Status: Prioritization Needed'''

== User Story ==

As a [type of user], I want to [perform some task] so that I can [achieve some goal].

== Notes/Comments ==

* Describe your problem and what you need here. -- name date
* Easily sign your username and the current date/time by inserting four tildes (<nowiki>~~~~</nowiki>). -- [[User:Alida|Alida]] 10:38, 22 September 2009 (EDT)

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Access Requests

2012-04-26T14:19:55Z

Alida:

'''Status: In QA'''

== User Story ==

As a PI or data provider of a project, I want the ability to authorize requests to access my projects myself so that I don’t need to go through DataShop staff.

== Notes/Comments ==

* Feature includes the ability for any registered user to request access to any private project.
* PI and data provider (if specified) must agree for a user to receive access
* PIs and data providers of projects can view and export an access report

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Other Analysis Outputs

2012-04-26T14:19:05Z

Alida:

'''Status: In QA'''

== User Story ==

As a user of DataShop, I want to store my model results in DataShop so that I can collaborate with other researchers.

== Notes/Comments ==

* Talked about having "Other Analysis Outputs" as a tab in the DataShop interface so the users of web services can create a simple text file (some sort of free form document) and store it back to DataShop. -- From a meeting with Ken on 3/24/2011
* Feature entailed the creation of a Files tab with Papers, External Analyses, and Files subtabs

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

DataShop

2012-01-20T16:04:34Z

Alida: /* Features We Are Building or Have Built */

The [https://pslcdatashop.web.cmu.edu PSLC DataShop] provides two main services to the learning science community:

* a central repository to secure and store research data
* a set of analysis and reporting tools

Researchers can rapidly access standard reports such as learning curves, as well as browse data using the interactive web application. To support other analyses, the DataShop can export data to a tab-delimited format that can then be used in statistical software and other analysis packages. Keep up-to-date on the latest DataShop news on our [http://pslcdatashop.org/about about] page.

== We need your help! ==

'''We are seeking your feedback on [[Web Services - Add Custom Fields|our current custom fields design proposal]].''' We've been discussing and designing a new feature for DataShop—the ability to add and modify custom fields for existing data in DataShop. We'd like your feedback '''by January 19, 2011'''! Please [[Web Services - Add Custom Fields|take a look]].

Please also help us decide which features to add to DataShop, as well as the order we'll build them. The more votes a feature has, the sooner we'll build it. Go to [[DataShop Feature Wish List]] to join the conversation.

== Features We Are Building or Have Built ==
* [[DataShop 5.x Features]] — ''Jan 2011 – present''
* [[DataShop 4.x Features]] — ''Sep 2009 – Dec 2010''
* [[DataShop 3.x Features]] — ''Nov 2008 – Aug 2009''

== How to Request a Feature ==
* [[Write a User Story]]
* [[Create a Feature Page]]
* Add Link to Feature on [[Collected User Requests]] page.
 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]] 
See [[Web Services]]
[[Category:Protected]]
[[Category:DataShop]]

Order KCs by BIC on Primary Model

2011-09-28T12:17:36Z

Alida: /* Notes/Comments */

'''Status: Design/Req'ts complete, part of KC Model Sort feature'''

== User Story ==

As a regular DataShop user, I want to know which KC Model has the best fit so that I can look at learning curves for the best model without being distracted by a lesser model.

== Notes/Comments ==

* This problem was made apparent during the December 2010 user meeting, The Introduction to DataShop Workshop. When using the Geometry Area (1996-97) dataset, the first model alphabetically is 'Area' which is a model with just 2 KCs and is not very interesting. Let's change the order of the KC Models in the Primary Model drop down menu to order by BIC, just like we do on the KC Model page. That way, users will see the best KC Model first instead of whichever one happens to be first alphabetically.
* The order of the KC Models in the Primary Model drop-down menu is determined by the sort set on the KC Models Page. The default there is AIC ascending. Not BIC as the name of this feature implies. (9/28/2011)

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Flat File Importer

2011-09-28T12:14:23Z

Alida:

'''Status: Done (DataShop v5.0 May 2011)'''

== User Story ==

As a DataShop administrator, I want to redesign Dataset Import Tool to load the dataset into database by processing it column by column so that I can speed up the import process.

== Summary from Release Notes ==
This release of DataShop concludes work improving the tool used to import tab-delimited text files into DataShop. With these improvements, loading large tab-delimited text files of transaction data is now possible. It's fast, too.

As part of this release, we have used the new import tool to load 6 datasets that we had been unable to load. These datasets range in size from 122,000 to 870,000 transactions.

== Notes/Comments ==

* Current Dataset Import Tool processes the dataset row by row and uses Hibernate layer, which takes a long time to import a dataset.
* The import sometime has failed for several large datasets and has some bugs as well.
* We'd like to rewrite this import tool to allow column by column process and avoid Hibernate layer to make the import faster.
* The goal is to process 1 million rows per minute on import only. [[User:Shanwen|Shanwen]]10:09, 12 October 2010 (EDT)

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Citations

2011-09-28T12:12:31Z

Alida:

'''Status: Design/Req'ts complete, Estimate 12 days'''

== User Story ==

As a primary investigator, I want researchers who use my dataset to cite the correct paper or URL so that I can be recognized for my work.

== Notes/Comments ==

* Show a message on export, to tell user what to cite, show them a citation. Include DataShop URL and paper.
* Create a field on Dataset Info to enter a citation (or an "acknowledgement"?) for the dataset. Could be a paper citation or a website URL, for example. As a result, the exports from DataShop (transaction, student-step, student-problem--the latter two are not yet zips but would need to be) should include a small text file that includes the content of the citation (maybe prefaced with: "If you use this dataset in your research, please cite it as follows:") -- Steve Ritter & John Stamper, User Meeting, December 2010

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Order KCs by BIC on Primary Model

2011-09-28T12:11:46Z

Alida:

'''Status: Design/Req'ts complete, part of KC Model Sort feature'''

== User Story ==

As a regular DataShop user, I want to know which KC Model has the best fit so that I can look at learning curves for the best model without being distracted by a lesser model.

== Notes/Comments ==

* This problem was made apparent during the December 2010 user meeting, The Introduction to DataShop Workshop. When using the Geometry Area (1996-97) dataset, the first model alphabetically is 'Area' which is a model with just 2 KCs and is not very interesting. Let's change the order of the KC Models in the Primary Model drop down menu to order by BIC, just like we do on the KC Model page. That way, users will see the best KC Model first instead of whichever one happens to be first alphabetically.

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

KC Model Sort

2011-09-28T12:09:49Z

Alida:

'''Status: Design/Req'ts complete, Estimate 3 days'''

== User Story ==
As a researcher comparing KC Models, I want to be able to sort the KC Models on the KC Models page so that I can compare the models easily.

== Notes/Comments ==

* Allow sort on: BIC, AIC, Log Likelihood, date, and current sort (type, owner) [Ken Team Meeting October 2008]
* Currently (Nov 2008), there is only one dataset for which this is an issue.

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

KCM Cross Validation Values

2011-09-28T12:07:53Z

Alida:

'''Status: Complete, December 2010'''

== User Story ==

As a [type of user], I want to [perform some task] so that I can [achieve some goal].

== Notes/Comments ==

* I would like to provide DataShop with an algorithm to calculate cross validation values for each KC Model. -- Hui Cheng, 5/10/2010
** Only on KCMs with mapping type of Step-to-KC
** Need to store two numbers, the cross validation number (RMSE: decimal between 0-1) and the number of rows.
** The input for computing Cross Validation RMSE is SSSS formatted file

* There are also a few changes to the current datashop interface
** Add number of parameters for BIC an AIC
** Change the way opportunity numbers are counted. This will affect Learning Curve--LFA Values.

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

DataShop 5.x Features

2011-09-28T12:05:34Z

Alida: /* v5.1 July 2011 */

== v5.0 April/May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

== v5.1 October 2011 ==
# [[Add Problem View to Export and Import]]
# [[KC Model Sort]]
# [[Order KCs by BIC on Primary Model]]
# [[Citations]]
# Changes to Cross Validation

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

Collected User Requests

2011-08-25T13:17:52Z

Alida: /* Annotations */

See prioritized items on [[DataShop Feature Wish List]].

== Annotations ==
* Some links from Ruogo Kang's (CMU PhD student, Sara Kiesler) recent talk. -- Ken, email, 8/24/2011
** http://vis.stanford.edu/papers/senseus
** http://vis.berkeley.edu/papers/commentspace/

==== Annotations on Transaction Level ====
* I have models which can annotate things like: gaming, bored, etc. on the transaction level. -- Ryan Baker, ET Mtg 12/5/2007

==== Annotations on Student Level ====
* Would annotate on student level. -- Ido Roll, User Meeting, 1/19/2009

==== Annotations on Pages ====
* See the cool thing created by Jeffery Heer where all the settings of the page were recorded with the comment. -- Ryan Baker, DS Team Mtg 5/23/2008

==== Dataset Discussion - Capture data-integrity issues ====
* As a stakeholder in the DataShop project, I want to capture and publicize the data-integrity issues discovered with data sets so that data is better documented (and so we've fulfilled a promise to our funders to better document data). -- Ken Koedinger, Team Meeting, 8/15/2009
* As a user of DataShop, I want to discuss datasets and have that discussion attached to the dataset so that others can comment and better understand any data-integrity issues I've found.

==== Linking to internal pages ====

* It would be handy if a link can be saved to any dataset, sample, page in the DataShop. -- [[Alida]], 10/18/2007
** Currently, https://pslc-qa.andrew.cmu.edu/datashop/DatasetInfo?datasetId=793 works if you are already logged in.

==== Have a link from the DataShop to the Theory Wiki (Dataset to Project Page) ====

* Can we link from the dataset to the project page on the Theory Wiki? In the pipeline have a clickable link to the project page (make project name clickable). -- Michael Bett, ET Mtg 11/14/2007
** Link to a dataset directly? Is that obvious to users? Click on dataset link -> log in -> redirected back to dataset. -- Brett Leber

== Data Format ==
==== Capture the question prompt and answer choices the student chose from ====
* As a research, I want to be able to identify steps based on the question prompt—not the difficult-to-understand step names that come from selection and action of my tutor—so that I can analyze the data more easily. For multiple choice questions, I also want to be able to see all of the choices that were available to the student. -- Eli Silk - February 1, 2011 (meeting with Brett and Ross Higashi of the FIRE project)
** Near-term solution is to create a table locally that maps steps to prompts
** Another solution is to ask CTAT team to modify their Flash components so that they log this information as custom fields
** Long-term solution is to make these fields into standard fields in the tutor message format
** In the email thread "Cognitive Tutor Development and Evaluation Requests", there is support for this general idea from Ken Koedinger, Albert Corbett, and Christian Schunn.
** Ken added that "Ideally, we may want to store any images that the student can see and where they reside on the screen ..."

== Data Modeling ==
=== Non-KC Modeling ===

==== Automatic Distillation ====
* As an educational data miner wishing to develop a machine learned model with PSLC data, I would like to be able to automatically distill data features (e.g. custom fields) commonly used in past educational data mining research for a new data set (see, for instance, Baker, Corbett, Roll, & Koedinger, 2008 in UMUAI) -- Ryan Baker, Summer 2008, Startup Memo
** Could be implemented as a plug-in
* Also interested in this feature idea. -- Dan Franklin, Oct 2008

==== Upload model and apply it to new data set ====

* As an EDM researcher, I would like to take a model, expressable as a linear formula on DataShop fields, or a simple code procedure (e.g. Bayesian Knowledge Tracing, which Ryan has code for), and apply it to a new data set, so that I can ... -- Ryan Baker, Sept 2008
* Also interested in this. -- Maxine Eskenazi, Sept 2008
* May work best as a plug-in
** Code to display GUI to choose which data sets to use, calls model code, re-import to DataShop
** Good to have a way to apply many models, as soon as you import a data set
* Phil has an idea that maybe fits within this one. Please move if there's a better category. -- Brett Leber
<blockquote>This [''transaction? kc? --ed.''] relabeling is really mostly about enabling modeling in DataShop right? With this in mind, I think that it is actually a higher priority to have model alternatives in DataShop.... E.g. Investigators should be able to give you chunks of Java code according to a certain specification, and DataShop should be then able to run these over datasets (perhaps after a certain series of QA occurs according to an SOP) when the investigator clicks some button in DataShop.... Obviously this is a much large project than adding columns, but it is also much more important in my mind. ''-- Phil Pavlik, email to Brett on 1/14/2009''</blockquote>
* Examples:
** Example: running gaming detector in multiple tutors and comparing gaming frequencies
** Example: applying Bayesian Knowledge Tracing to a new data set from the same LearnLab
** Example: applying Ben Shih's models to many data sets. Note that Ben Shih should be included in design of this feature; he is interested, and has a lot of good ideas.

==== Add Different Predicted Values ====
* Would also like to add statistics, different predicted values than what LFA produces. -- Ken Koedinger, ET Meeting, 10/10/2007

==== Bayesian Knowledge Tracing ====
* Bayesian Knowledge-Tracing built into DataShop like LFA is. -- Ryan Baker, Startup Memo, Summer 2008

==== Richer statistics for KC modeling ====

* In addition, to the model stats and estimates generated for learning factor models, we should also create difficulty factor models (i.e., ones with "Slope" parameter). The latter is particularly relevant for the Unique-Step model where the slope parameter is meaningless (but still counts against the BIC value). -- Ken Koedinger, Email "new feature request", 1/22/2009
** Relatedly, we should report significance values on the Slope parameters -- that is, when is the Slope significantly different from 0.
** The KC models page perhaps should also report the log-likelihood and number of parameters (in addition to BIC) and leave out AIC. We might also consider other metrics of model generality, like the "adjusted R2" (if I have this name right -- Joe Beck mentioned in the Assistments meeting yesterday).
** These changes will be part of meeting the CMDM goal of improvement in (or at least demonstrate acceptability of) the cognitive models in 90+ units in our LearnLab courses (or affiliates).

=== KC Modeling ===

==== LFA/AFM: Check if enough memory using formula ====
* The LFA/AFM code could calculate how much RAM would be needed to run the algorithm on a given skill model using the formula provided by Hao. This formula is based on the number of transactions, number of students and number of skills. Right now it will not schedule itself to run on a model with over 300 skills, though there is a manual override. [[User:Alida|Alida]] 13:35, 29 November 2010 (EST)

==== Create KC Models through Web Services ====
* For John Stamper's CMDM project, it would be nice to automatically update KC Models through web services. -- [[User:Koedinger|Ken Koedinger]], DataShop Team Meeting, Sept 11, 2009

==== Automatically discovering new KC model ====

* Would it be possible to run some code (perhaps Hao's KC model selection code, perhaps something else generated by CMDM thrust) to find new best KC model. -- Vincent Aleven, Sept 2008
* As a learning sciences researcher, I would like DataShop to discover a new/better KC model for me.
* Could be done as a plug-in

==== Generate new KC Models with LFA ====
* Not sure who asked for this.
* It would be nice to generate new KC Models with Hao's LFA code
* Would need to specify factors.
* Ideas on where this could run?
** On a separate server? Request it to be run, specify duration. Have separate server queue up requests, email user when done.
** In Java Applet on client machine? -- Phil Pavlik

==== Same Skill Twice on Same Step ====
* Would like to be able to apply the same skill to a step twice during a KC Model Import. -- Ken Koedinger, email, 2/4/2009

==== Save KC Model Import Files ====
* KC Model Import - save the file used to create the KCMs in case we need to recreate them. -- Ken Koedinger, email 3/4/2009

==== Log Likelihood and MAD ====
* Log Likelihood, MAD (mean absolute deviation) problem, MAD step (store and show) -- Hao Cen
** This is a variation on "Richer statistics for KC modeling" above. Probably should be merged. - Ken Koedinger

==== Better naming for KCs in auto-generated Unique-Step KCM ====

As a researcher, I want the KCs in the Unique-Step model to have better names than KC1, KC2, etc, so that I can easily tell which generated KCs go with which unique step.

* Hui Cheng (Email 1/20/2009), Ken Koedinger (Email 1/22/2009)
* Could you put this in your new feature request list: could the “Unique-step model” be better labeled then just “KC1”, “KC2” and etc? For example, for Assistments data, you could use part of the “Step Name”. -- Hui Cheng, Email 1/20/2009
* But, anything is better than "KC". -- Ken Koedinger, email, 1/22/2009
<blockquote>A simple alternative, that preserves uniqueness and addresses length, is to concatenate: 1) the first K letters of the step name 2) a unique numerical increment (same as the "3" in "KC3"). Note that (2) guarantees uniqueness just as it does in the current "KC<num>" scheme. Or perhaps better given that step names are often scoped within problems, is to concatenate: 1) the first L letters of the problem name 2) the first M letters of the step name 3) a unique numerical increment (just like the "3" in "KC3") I think K or L+M should be as big as possible without making the KC names indistinguishable (because they run off the right margin) in the KC list on the Learning Curve and other pages. </blockquote>

==== Visualize Learning Curve Split ====
* Be able to visualize a learning curve split into 2 based on a specification of a subset of problems. -- Albert Corbett, Math CCM, November 2008
* Harder: make me a new KCM out of it. -- Ken Koedinger, Team Mtg, Dec 5, 2008, while trying to describe Albert's request to Alida

==== Statistical Significance ====
* Can DataShop determine if the difference between conditions or learning curves is statistically significant? -- general theme at workshop, probably mentioned by Bob Hausmann in his talk, Winter Workshop 1/23/2008
** Can't do it yet in DataShop, but I can show you how to do it in R (or SPSS...) after you've exported the data -- export the "student-step rollup" than the whole transaction table. --[[User:Koedinger|Koedinger]] 16:30, 16 September 2009 (EDT)
*** This comment perhaps belongs (exists?) elsewhere: The current student-step rollup export (relly, all exports) should be such that I can immediately load it into R (and other packages) without error. Now errors occur, for instance, because there are "#" in the variable names i the student-step rollup. However, it is currently a road-block for helping folks like Bob do analyzes they want to do. --[[User:Koedinger|Koedinger]] 16:30, 16 September 2009 (EDT)
*** See [[Condition in Student-Step Rollup]] -- [[User:Alida|Alida]] 10:35, 17 September 2009 (EDT)

==== Split and Merge Skills ====

* Hand searches though a p-matrix for a dataset to split and merge skills. (Pie in the Sky) -- Ken Koedinger, Team Mtg, 02/22/2008

==== Notes on new KCMs ====

* It would be good if I could add a note to a KC model that was newly imported. -- Noboru Matsuda, email, Nov 19, 2009

==== Display Learning Curves Grouped by Interestingness ====

* The page displaying all the learning curves today seems to be alphabetically sorted by KC name, which is not necessarily meaningful.
* An alternative presentation is to group the curves into 4 sets, breaking up the page. Set 1 has curves that contain significant spikes, and therefore seem to be "low-hanging fruit" for purposes of breaking up into KCs. Set 2 has curves with few spikes, but they have a long X axis, suggesting that students are presented with too many opportunities to acquire those KCs. Set 3 has the "good" curves, i.e., nicely decreasing curves that are not too long. Set 4 is "other". -- [http://www.pitt.edu/~goldin Ilya Goldin] 7 December 2009

==== Order KC models according to AIC====
* This is based on results from multiple dataset analyses that compared AIC, BIC and loglikelihood to cross validation RMSE. -- Mimi McLaughlin, 2/9/2011

====Use log of opportunity count for AIC and BIC calculations====
* We compared using the log of opportunity count to whole number opportunity count in multiple datasets. We found the results for log of opportunity count to be consistently better, though small. -- Mimi McLaughlin, 2/9/2011

== Developer Requests ==

==== Store Converted Date and Converter Info ====

As a DataShop administrator, I'd like to see the converter information (version and date) stored in the database, so that I do not have to store that data manually in the Additional Notes field each time I load a dataset. -- Kyle, 8/5/2008

* DTD new fields:
** Store conversion and converter information in database (anything else?)
*** conversion_time
*** converter_info
* Email from Octav, 10/5/2007

I see there's also a note about the converter version in the Dataset
Info. Which is good, but it seems it's taken from the directory name
when I submitted the set. I don't know how reliable that is.  :-) It
would be better if it's taken from the new converter info field.

==== Convert from XML to tabbed-delimited format ====

* If the users agree that export format is valuable, then maybe if they could convert from XML to export format to see data in Excel, could look at Selection column and see blanks more easily. -- Jonathan Sewall, ET Mtg, 10/10/2007

==== Plug-ins (general issues) ====

* Please please support Ruby on Rails. -- Ben Shih, December 2008

==== Create UI to grant DataShop user roles ====

* Already tedious.
* Alida, User Meeting AAR on December 9, 2009

== Help ==

==== Specialize Label of Help Button ====
* Since this help is better than in most applications, it should say more than just 'Help'. -- Ken Koedinger & Ryan Baker, Team Mtg, May 30, 2008
** Ideas:
*** 'Page Help'
*** 'Help with this page'
*** 'Help with Learning Curve page' (Ken's favorite)
*** 'Help with this tool'

== Home Page ==

==== Redesign the Home Page ====

* In the menu of data sets at the top, include the N (=20 or as many as fit on the screen?) data sets that I have visited starting with the ones I've visited most recently. --[[User:Koedinger|Koedinger]] 16:16, 16 September 2009 (EDT)
** As of today, the menu shows the last 10 data sets, most recently visited at the top. I think the feature is good enough, but let's ask Ken --[[User:Bleber|Bleber]] 10:56, 6 August 2010 (EDT)
* There needs to be a better ordering for the datasets (DS364)
* Maybe a search to filter the list of datasets since the list is so long. -- Brett Leber, 6/14/2007
* Going back to the home page always goes to 'My Datasets' (DS313)
* Maybe show more high level stats on this page, like how many transactions, students, skill models
* Allow users to post and share project documentation (files, papers, other meta-info) -- Ruth Wylie, suggested during meeting on 8/4/2010. She had a file that is relevant to multiple datasets in her project.

== Import ==
== Miscellaneous ==

==== Analyses by LearnLab ====

* Organize data by LearnLab, not by "data set". -- Ryan Baker, Aug 2008
* Also: Bob Hausmann, Sep 2008; Maxine Eskenazi, Sep 2008
* Essentially, current data sets become samples, but the top-level unit is the LearnLab. You can take every data set in a LearnLab together as a sample.
* Implies being able to run analyses across data sets, and export multiple data sets together; to create multi-data set samples
* As a user of DataShop, I would like to look at learning curves for all Algebra data together (for example), or export all Algebra data
* Important long-term, but is a lot of work -- in particular, we need to solve scalability issues first.

==== Save Settings Between Sessions ====
* It would be useful if DataShop could save settings between sessions. -- Bob Hausmann, User Meeting, 2/1/2008
** "I do a lot of redoing the same steps" (e.g., set cutoffs, select a KC model, select students).

==== Multiple steps per transaction ====

* Needed so that we do not have to create multiple transactions for the same actual action for Andes logs. -- Kurt van Lehn, Feb 2007

==== Demographic data ====

* This has been mentioned by NSF visitors, AB, ESL, and some researchers.
* Also mentioned at Winter Workshop 1/23/2008.
** Derek/Sue-mei: Student background information not in DataShop. Would like to see a student or set of students from a particular demographic, and view them across datasets!
* Note that Gail added demographic data to Additional Notes field on the Dataset Info page for many datasets. The idea here is to put that data into the database somewhere.

==== Single Sign On ====
* Michael Bett, email, 10/8/2007
* It would be nice if the following services have a single login account/password:
*# Theory Wiki
*# Learnlab.org
*# ESL's OSS
*# DataShop

==== Reveal unanonymized student IDs ====

As a researcher/PI performing research assistant tasks, I want to see easily the unanonymized student IDs of subjects in DataShop so that I can email my subjects telling them when to use my system.

* Ruth Wylie, July 3, 2008
* As the honest broker of the PSLC data, I have promised to not reveal the student IDs and to protect the identity of the students. This is part of the DataShop IRB. Therefore, I do not see this request as possible. [[User:Alida|Alida]] 09:53, 4 September 2009 (EDT)
** At some point, some coordination would be good with OLI's Digital Dashboard project that Marsha Lovett (and the OLI team and sometimes me) is working on. This is meant to provide usage information more quickly to instructors. It could also perhaps be used by researchers (with the right IRB rights) in situations like Ruth's.

==== Knight Timeline ====
* Developed by Andrea Knight, 2004

==== Buggy Skills ====
* Ken Koedinger, prototype walkthrough 9/11/2006

==== Confusion Matrix ====
* Brian MacWhinney, prototype walkthrough 9/11/2006

== Navigation Bar ==
==== Filter KCs by Name ====

As a researcher working with KCs, I want to filter KCs based on their names, so that I can...
* Vincent Aleven, Email, 2/3/2008
* "Since Alida said you cannot have two mechanisms for putting together your KC set (i.e., cannot have both the selecting-by-clicking and selecting-by-filtering), I would probably opt for the latter."
* Alida: I thought Vincent mentioned that he'd like to select which KCs are in a set by filtering on the name. Example: Include KCs with '*reason*' in the name and exclude KCs with '*given*' in the name.
* This could be an addition to our v3.0 KC-selection mechanism--filter by name.
* Vincent, Email, 5/6/2009: Expressed another need for this feature. Could just allow for a wider area and longer list so that more items can be checked at once. The number of characters we show right now is not enough because in many cases that number of characters is the same across many of the skills. Reference data set: Geometry CWCTC 2005-2006

* Status: Design Started

==== Facebook-style KC Selection ====

As a researcher working with KCs, I want to select KCs based on the learning curve thumbnail, so that I can see quickly which ones I'm interested in exploring more deeply.

* Feature already designed for v3.0, not implemented due to time constraints.
* Agreed this would be really useful. -- Kirsten Butcher, User Mtg, 1/31/2008
* Status: Guestimate: 20 days, need to revisit requirements document

==== Feedback after clicking a large sample on a large dataset ====

As a user of DataShop (first-time or not), I want some feedback and the ability to cancel after I do something that might take a long time (e.g., clicking "All Data" on a large dataset) so that I do not get stuck.

* Part of the Susan Goldman story
* After clicking a sample for a large dataset, there is no "Loading..." text, no feedback that the click was even registered by the app (besides the sometimes busy cursor and small browser "loading" text), nor the ability to cancel the action. 
* We will always have similar problems even if performance is improved, so providing feedback and the opportunity to cancel is critical.

==== Save Button in Problem Navigation Box ====

* Save buttons in the sidebar. -- Ken Koedinger, Mtg 2006
** Could also put one in the Problem selection box in the sidebar.

==== Make Nav Bar Wider ====
* Make the Sample name and description fields much wider. -- John LaPlante, email 7/10/2007

== New Visualizations/Reports ==

==== Student-KC Rollup ====
As a researcher, I want to see KCs rolled up by student, so that I can ...

* Vincent Aleven, User Mtg, 1/29/2008
** By Student-KC would be more useful than by Student-Problem
** Example: # Steps asking for a hint or error or what proportion had help
** How often bottom out hint occurs

==== Instructor Reports ====
* Phil said he received a lot of positive reactions to providing reports on units for instructors. -- Phil Pavlik, ET Mtg 10/10/2007

==== Manage Authorizations/Projects Page ====
* Lisa Anthony, email 10/23/2007
* Allow PI to change permissions on the datasets.
:"Actually, I couldn't see how to change permissions on the datasets from the website. Is this possible? If not, it might be a nice feature..."

==== Calculate Time Spent on Different Study Activities ====

As a researcher, I want to know how much time, on average, students spend on study activities, so that I can ...

* Bruce McLaren, Email, 4/7/2009
<blockquote>
For my most recent stoich study, Shawn and I are interested in calculating timing information such as: (a) how long students spent, on average, working on individual tutors (b) how long students spent, on average, on all items in an intervention (c) how long students worked, on average, on post-tests. 

Timing information is very commonly required for studies, and can be calculated from DataShop logs relatively easily, so even if we don't have it, might be worth considering. (And we don't want to re-invent the wheel, if you already have it or are planning it...)
</blockquote>

==== Incorrect Step Duration and Hint Step Duration ====

As a researcher, I want to be able to see total step duration if the student's first attempt was an incorrect attempt, and total step duration if the student's first attempt was a hint request, so that I can do some analyses that I can't do with "Error Step Duration".

* Bob Hausmann, email, 11/11/2008.
* Updated title and story with 'step duration' instead of 'time'. -- [[User:Alida|Alida]] 10:36, 4 September 2009 (EDT)

==== Grading ====

[[Grading]]

====Display number of steps and number of observations for skills====
* How and where to be determined by developers. -- Ken (entered by Mimi)

== Reports ==
=== Dataset Info ===

==== Pointers to Hard-copy Data ====
* Brett van de Sande, NSF Site Visit, 5/28/2008
* Pointers to hard-copy data such as paper tests and/or homework.  Include contact information.  It doesn't seem to make sense to scan a whole filing cabinet of paper if no one wants to look at it.  And any secondary researchers don't know about the filing cabinet to ask for it.

==== Sort Problem Breakdown Table ====

* Would like the ability to sort the table by clicking on the column headings of the Problem Breakdown Table on the Dataset Info Tab. -- Bruce McLaren, User Mtg, 11/5/2007

==== Rename dataset ====

As a researcher, I want to rename my dataset so that it makes more sense to other people. I also want to make sure the dataset doesn't become polluted later by new data not associated with my study.
* Ruth Wylie, July 3, 2008
* There are reasons she would want to do this (current name is worthless, other researchers might try her tutor and pollute her data) but also reasons for not doing it (log more data later).
* There are risks in changing a dataset name that might not be apparent. For example, if you want the new data in the same dataset. [[User:Alida|Alida]] 10:27, 4 September 2009 (EDT)

==== Average time per problem, average number of problems, total number of sections ====

In addition to showing student hours per dataset, it would be useful to know the average time spent per problem, average number of problems completed, and the total number of sections.
* Noboru Matsuda, June 18, 2010

=== Error Report ===

==== View By Student ====

* Would like to see what a couple of students saw in the feedback. -- Marsha Lovett, 10/11/2007

==== Export ====
* I would like the ability to export this data. -- John LaPlante, email thread 'Suggestions for Improvement' 7/10/2007
* Also interested in this feature idea. -- Bruce McLaren, User Mtg, 11/5/2007

==== Sort ====

* Was planned for but not implemented in v2.1 (estimated to be a 4 day task)
** By Correctness %, starting with the least correct
** By Hints %
** Step (or KC if view by KC)
** Number of Students
* Ability to sort problems by their average experienced position within the curriculum. -- Ken Koedinger, 02/16/2007
** Which problem did students most often experience first, then the one experience second most often, ...
* Order steps by the order they typically are executed by students. -- Ken Koedinger, email 11/7/2008
:"Searching through the steps in a problem to get a sense of what is going on is currently hard because the steps are ordered alphabetically, not by the order in which most students did them. While not all students do all steps in the same order, there is some regularity there. It would be quite useful if the steps could be ordered in a "typical order". This could be accomplished by using the time stamps (of the first (correct?) transaction?) for each step to determine rank order of the each step for each student in a problem and then for each problem average the rank order of each step across all students. Then arrange the steps in the Error Report by their average rank order -- that is, roughly speaking, the step that is most likely to be first across students (closest on average to first) goes first, the step with the next lowest rank goes next, etc."
* The capability to count the number of errors of each message type and sort in different ways, for instance by all errors that had no messages. -- Bruce McLaren, email 10/22/2007
:"This is an error analysis I recently did in Excel, using pivot tables, that might be handy if in the DataShop. This one is very important for tutors because the errors that occur most frequently, yet don't elicit messages to the students, are good candidates to become errors with feedback."

==== Show more than 500 problems ====

In the error report, can we see more than 500 problems? See set "Cog Model Discovery Experiment Spring 2010"
2/2888 selected.
(Showing the first 500)
-- Ken via email on 2/15/2011

=== Export ===

==== Last attempt on step? column for transaction format ====

* Include a new column that shows whether the row is the last attempt on a step for a student or not. Could be 0 or 1 as value. Helpful for researchers who are doing grading of data. Transaction format. --Vincent Aleven, CTAT mtg 11/5/2010

==== Elapsed Time ====

* Include the elapsed time in preview and transaction export. It is more valuable than the transaction time as an absolute reference. Possible to keep both. --Ken Koedinger, Team Mtg 04/18/2008

==== SQL Format ====

* Option to export as an SQL file. -- Ken Koedinger, 03/26/2007, also brought up in June ET Meeting
** Ability to export an SQL dump of a dataset. --Kyle Cunningham, 04/03/2007

==== Specify Character for Blanks ====

* Ability to specify what character if any is used for blank. --Ryan Baker, email 8/9/2007
:"Not all tools handles TABTABTAB correctly on import. The period '.' is used to mean missing data in most stats packages. The word 'BLANK' is used in some other ones. Not an issue for Ryan as he wrote a preprocessor to convert blanks.

==== Opportunity (at KC) Count in Transaction Export ====
* Include the opportunity count in the transaction export (it's only in the student-step rollup) -- Noboru Matsuda, 10/08/2009
** Would be repetitive
** Would need one Opportunity column per KC

==== Export only rows that have KCs tagged ====
* Is it possible when a exporting dataset to include only the [transaction?] rows that have knowledge components tagged? And the same goes for KC models export, only include the items that have KC tagged? -- Hui Cheng, 01/19/2010
** We have the inverse of this option on the Performance Profiler, 'Include steps without a knowledge component', and with the Student-Problem export, 'Include Steps without KCs'.

==== Include Custom Fields in Student-Step Rollup ====
* Is it possible to include the custom field in the datashop [step] export? -- Hui Cheng, 03/01/2010
** "I am thinking about the student-step level export. We have a student from Statistics wanting to use assistment data from datashop. She wants to have problem set id (=curriculum id in datshop). For Assistment data, we decided to put problem set id in the custom field because in the Assistment a lot of problems are repeated in different problem sets. She needs data at the student-step level." (Hui email)
* Vote from Phil Pavlik too -- see [[Collected_User_Requests#Include_transaction_custom_fields_in_web_services_student-step_export|Phil's comment under Web Services]]

==== Don't duplicate rows in student-step format when not showing KCs ====
* If the checkbox to show knowledge components is not checked, maybe it doesn't make sense to show rows more than once if they have more than one KC associated with the step. (Mimi (and Brett) stumbled on this. 8/16/2010)

==== Student-Step Rollup include Success Column ====
* Step rollup, 1 if correct, 0 if incorrect/hint, blank otherwise call it Success. ~~ Ken Koedinger, DataShop Team Meeting, Oct 22, 2010

=== Learning Curve ===

==== Default sort by observation on LCPID ====

* Default sort by observation on LCPID. ~~ Ken Koedinger, DataShop Team Meeting, 10/22/2010

==== Purple Point ====
* Purple Point: if a point on the LC has more than one KC associated with it but you have drilled down to a given KC, then the blue line is off. We could put a purple point that takes this into account.
* Simpler thing: display a warning message that some points in the display are driven by other KCs
* Pearson may be interested
* This was mentioned during the PSLC Summer School 2010.
* For a step with multiple skills, attribute the error only to the skill with the highest overall error rate. ~~ Alida, meeting with Ken, November 18, 2010

==== Reduce Scrolling ====
* Add a forward and back button to the graph to reduce scrolling. -- John LaPlante, email 7/10/2007

:"The learning curve page could use a forward and back button to cycle through learning the learning curves. Going through them one by one requires a lot of scrolling."

==== Turn On Point Labels ====

* It would be nice to have the option to turn on point labels. It is nice that I can mouse over a point and view the data but it would be nicer if it appeared automatically. -- John LaPlante, email 7/10/2007

==== Option for Bigger Graph ====

* Allow user to see bigger graph. -- Derek Chan, Winter Workshop 1/23/2008
** Potential solution: enable user to set x, y scale manually

==== LC Normalize Scale of Thumbnails ====
* [[LC Normalize Scale of Thumbnails]]

=== Performance Profiler ===

==== Rename Performance Profiler ====
* John laPlante, email thread 'Suggestions for Improvement' 7/10/2007
** Did not use this report as thought it had something to do with improving the performance of the DataShop itself. This report might have been much better to use then the Error Report, would still need an export as using the data in a tabular form was still necessary. Note that the pivot tables created were added to the dataset (Pittsburgh Science of Learning Center Stoichiometry Study 1).
* Lisa Anthony, email 8/2008
** Didn't know to go to the report. Export would be useful.
** Needed a better definition of Error Rate with respect to Problem and Unit rows.

==== Export ====
* John laPlante (see comments in Rename Performance Profiler)
* Lisa Anthony (see comments in Rename Performance Profiler)
* Yes, I too can imagine wanting to export the results of a particular performance profiler output (i.e., to a table) so that I can graph it my own way. --[[User:Koedinger|Koedinger]] 16:24, 16 September 2009 (EDT)

==== Table View ====
* Add option to switch to a table view.
* Columns are: Problem Name, Steps, % incorrect, Incorrect Steps, % hint, Hint Steps, etc. include all values in pop-up.

==== Union of KCs/Problems/Students ====
* Allow user to get the union of KCs/Problems/Students etc so they can compare across samples easier. -- Kirsten Butcher, Winter Workshop 1/23/2008
:"It is difficult to compare performance profiler graphs across samples because the KCs (or problems, or whatever) aren't necessarily in both of those samples."

==== Show Details In Report ====
* Click on bar to see details in report and not just in pop-up. It disappears too quickly. -- Alida, Brett

==== Show More Information in the Graph ====
* Show more information in the graph: [Bruce M, User Mtg, 11/5/2007]
** Had drilled down by a certain skill - skill is not listed in the graph, user has to check the skill list on the LHS to see what skill was selected
* Maybe related to Bruce's "show more info in graph": show the actual value of the range variable. e.g., when range is error rate, show the error rate number somewhere (right now you can see, via mouse-over, the incorrect, hint, and correct percentages, but not the error rate) -- Brett
* Design idea to show # steps incorrect, # steps hint, # steps correct to clarify how the percentages are calculated. -- Alida, Brett

== Sample Selector ==

==== Sub-Samples ====

* Sub Samples would be helpful. -- John LaPlante, email 7/10/2007
:"A nice solution would be to have sub-samples where one property varies. When I'm doing this analysis, I've changed my sample many times, renaming it sometimes, tweaking it to get variations on the data. The samples are really useful but they could help me a lot more with this kind of experimentation."

==== Filter out students ====

As a researcher, I want to filter out test users (including myself) from my data so that I see less noise in the data.

* Ruth Wylie, July 3, 2008
* You can already filter out test users by using a test user id that starts with 'weirdCMUuser_xxx'. Then create a sample that excludes students with a name like 'Test_%'. --[[User:Alida|Alida]] 10:29, 4 September 2009 (EDT)

==== Filter by "Class" ====

As a researcher, I want to create samples based on "class" since class is how I've encoded my conditions.

* Maaike Waalkens, July 30, 2010
* This is what made sense using Mathtutor for tutor delivery.
* What other fields are we missing in the Sample Selector?

==== Filter by "Step" ====

As a researcher, I want to create samples based on "step" since I'm only interested in one particular step.

* Mimi McLaughlin, August 17, 2010

==== Create Sample Automatically ====

* Would it be possible for me to get a random sample from the 'Bridge to Algebra 2006-2007' dataset of 100 students? I am having trouble looking at the data because it takes too long to load, and my adviser thought that was because the dataset was too large. ~~ DataShop User, 10/19/2010

== Web Services ==

==== Include transaction custom fields in web services student-step export ====

* "I noticed in the web services guide that cfs (which provides the custom fields) is not yet implemented for step roll-up tables. It is marked [coming soon] in the manual... I could write a workaround to pull in the transactions and lookup the custom fields, but I'd really rather not." -- Phil Pavlik, 4/27/2011

* "It would be best if the CF for step rollup was drawn from the primary transaction for the first attempt that is correct or incorrect. At least that seems like the generally best value. Basically, there may be many cases where the custom field is the same across all transactions for a step. In this case ... you could just use the first one since they are all the same." -- Phil Pavlik, 4/29/2011

==== Use Custom Fields Graphs/Reports ====
In Graphs

As a researcher creating custom fields and assigning values at the transaction level, I want DataShop to perform the aggregation to the step level so that I can do other things with my custom-field variable such as graph it. -- Ryan Baker, mtg w/Alida & Brett, 12/15/2008

Performance Profiler
* Use all discrete variables/custom fields on the left and all the continuous variables on the bottom of the Performance Profiler. -- [[User:Koedinger|Ken Koedinger]], DataShop Team Meeting, Sept 11, 2009

==== Ad-hoc queries ====

* Allow restricted filtering on steps and transactions as the next web service feature (after CFs), whatever they can filter on in the navigation boxes (User Meeting AAR, December 9, 2009)

==== Sample creation as a web service ====

* Sample creation is still too slow. (User Meeting AAR, December 9, 2009)

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]]
[[Category:Protected]]
[[Category:DataShop]]

Baker - Closing the Loop

2011-08-15T17:40:37Z

Alida: /* Summary Table */

== Using educational data mining to design tutor lessons that students don’t choose to game: “Closing the loop” ==
=== Summary Table ===
{| border="1" cellspacing="0" cellpadding="5" style="text-align: left;"
| '''PIs''' || Ryan Baker
|-
| '''Other Contributors''' || Milan Desai
|-
| '''Study Start Date''' || Fall, 2010
|-
| '''Study End Date''' || Spring, 2011
|-
| '''LearnLab Site''' || Hopewell HS
|-
| '''LearnLab Course''' || Algebra I
|-
| '''Number of Students''' || TBD
|-
| '''Total Participant Hours''' || TBD
|-
| '''Data available in DataShop''' || [https://pslcdatashop.web.cmu.edu/DatasetInfo?datasetId=479 Baker - Closing the Loop on Gaming - Hopewell Spring 2011] 
* '''Pre/Post Test Score Data:''' TBD
* '''Paper or Online Tests:''' TBD
* '''Scanned Paper Tests:''' TBD
* '''Blank Tests:''' TBD
* '''Answer Keys: ''' TBD
|}

=== Abstract ===

This 12 month CMDM project proposes to “close the loop” on a data mining analysis previously conducted within the PSLC ([[Baker_Choices_in_LE_Space]]) (Baker et al, 2009), showing that the previous analysis makes a contribution to improving student learning in in-vivo settings. In that previous study, a model of the differences between different tutor lessons (the Cognitive Tutor Lesson Variation Space, or the CTLVS1 -- full details on this model are given on the page [[Baker_Choices_in_LE_Space]]) was created, and used to study why some tutor lessons are gamed more than others in the Algebra tutor. The best model based on the CTLVS1 (developed via a combination of PCA and correlation mining) predicted over half of the variance in gaming, almost 6 times better than any previous model attempting to explain gaming through specific student individual differences.

In this study, we will choose a lesson from the Algebra tutor that is highly gamed (CTA 12: Systems of Equations A), and modify it in accordance with the findings of that previous work, such that the modified lesson is predicted to lead to significantly less gaming.

=== Background & Significance ===

In recent years, there has been considerable interest in how students choose to interact with learning environments. At any given learning event, a student may choose from a variety of learning-oriented "deep" paths, including attempting to construct knowledge to solve a problem on one’s own (Brown and vanLehn, 1980), self-explaining (Chi et al, 1989; Siegler, 2002), and seeking help and thinking about it carefully (Aleven et al, 2003). Alternatively, the student may choose from a variety of non-learning oriented "shallow" strategies, such as Help Abuse (Aleven & Koedinger, 2001), and Systematic Guessing (Baker et al, 2004). This pair of strategies is referred to as [[Gaming the system]] (Baker et al, 2004). Gaming the system is an active and strategic type of shallow strategy known to occur in many types of learning environments (cf. Baker et al, 2004; Cheng and Vassileva, 2005; Rodrigo et al, 2007), including the Cognitive Tutors used in LearnLab courses (Baker et al, 2004).

Recent work has indicated that a variety of aspects of cognitive tutor lessons are predictive of greater quantities of gaming (Baker et al, 2009). In particular, gaming is predicted by (boldface indicates a particularly strong relationship -- r2>0.15)

* '''Lack of text in problem statements not directly related to the problem-solving task, generally there to increase interest'''
* '''Not immediately apparent what icons in toolbar mean'''
* '''The lesson is not an equation-solver unit'''
* '''The location of the first problem step does not follow conventions (such as being the top-left cell of a worksheet) and is not directly indicated'''
* The same number being used for multiple constructs
* Reading hints does not positively influence performance on future opportunities to use skill
* Proportion of hints in each hint sequence that refer to abstract principles
* Hints do not give directional feedback such as “try a larger number”
* Hint requests that student perform some action

Historically, work to address gaming the system has either attempted to eliminate gaming behavior by making it more difficult to game (for instance, by putting delays between hints), or has attempted to detect gaming automatically and respond to it. The first approach appears to lead students to find new gaming strategies (Murray & VanLehn, 2005), and the second approach has led to systems that reduce gaming (Arroyo et al, 2007; Baker et al, 2006; Roll et al, 2007; Walonoski & Heffernan, 2006) and improve learning (Arroyo et al, 2007; Baker et al, 2006), but has typically been time-consuming and difficult to scale.

Within this project, we propose to use the findings from Baker et al (2009), which found tutor lesson features associated with gaming, as design principles for how to develop tutor lessons that students do not choose to game, in a completely unnoticeable way.

This study will also give us the opportunity to make a contribution to another area of research – recent work has suggested that interest-increasing text may reduce the transferability of knowledge (Kaminski et al, 2009). This may form a trade-off, where interest-increasing text reduces gaming (improving learning) but reduces the transferability of the learning. We will investigate this question with conditions that both include interest-increasing text, and lack interest-increasing text, but are identical in all other ways.

A third potential benefit of this study is in elucidating the link between these aspects of tutors and gaming behavior. We hypothesize that the mediating link is via the affective states of boredom and confusion. We will validate this hypothesis by observing student affect in each condition of the study.

=== Glossary ===

[[Computational Modeling and Data Mining]]

[[Gaming the system]]

=== Hypotheses ===

;H1
: Re-designing a tutor lesson to eliminate features shown to be associated with gaming (see above), will result in lower gaming and better learning

;H2
: The tutor lesson features associated with gaming(see above) influence gaming by increasing the incidence of boredom and confusion

;H3
: Adding interest-increasing text to a tutor lesson (one such feature) will reduce gaming and improve learning, but potentially at the cost of lower transfer

=== Independent Variables ===

Three conditions will be compared:

* An unmodified version of a highly-gamed lesson in Cognitive Tutor Algebra (CTA 12: Systems of Equations A)
* A modified version of the same lesson
** Clearer communication of the flow of problem-solving through the interface (with a giant arrow)
** Fewer help messages that are wholly abstract in nature
* A second modified version of the same lesson
** Adding interest-increasing extraneous text to the scenario
** Clearer communication of the flow of problem-solving through the interface (with a giant arrow)
** Fewer help messages that are wholly abstract in nature

=== Dependent Variables ===

* Incidence of gaming behavior (measured via quantitative field observations -- cf. Baker et al, 2004)
* Incidence of boredom and confusion (measured via quantitative field observations -- cf. Rodrigo et al, 2007)
* Learning of domain skills and concepts (measured pre-post)
* Transfer and preparation for future learning (measured at post-test)

=== Planned Experiments ===

A comparison of the three conditions will be conducted in an in-vivo school study.
We will control for time, and assign students randomly to conditions.

=== Explanation ===

=== Further Information ===

=== Connections ===
[[Baker_Choices_in_LE_Space]]

=== Annotated Bibliography ===
=== References ===

Aleven, V., Koedinger, K.R. (2001) Investigations into Help Seeking and Learning with a Cognitive Tutor. In R. Luckin (Ed.), Papers of the AIED-2001 Workshop on Help Provision and Help Seeking in Interactive Learning Environments (2001) 47-58

Aleven, V., Stahl, E., Schworm, S., Fischer, F., Wallace, R. (2003) Help seeking and help design in interactive learning environments. Review of Educational Research, 73 (3), 277-320.

Arroyo, I., Ferguson, K., Johns, J., Dragon, T., Meheranian, H., Fisher, D., Barto, A.,
Mahadevan, S., and Woolf. B.P. (2007) Repairing Disengagement with Non-
Invasive Interventions. Proceedings of the 13h International Conference on
Artificial Intelligence in Education, 195-202.

Baker, R.S.J.d., Corbett, A.T., Koedinger, K.R., Aleven, V., de Carvalho, A., Raspat, J. (2009) Educational Software Features that Encourage and Discourage "Gaming the System". Proceedings of the 14th International Conference on Artificial Intelligence in Education, 475-482.

Baker, R.S.J.d., Corbett, A.T., Koedinger, K.R., Evenson, S.E., Roll, I., Wagner, A.Z., Naim, M., Raspat, J., Baker, D.J., Beck, J. (2006) Adapting to When Students Game an Intelligent Tutoring System. Proceedings of the 8th International Conference on Intelligent Tutoring Systems, 392-401.

Baker, R.S., Corbett, A.T., Koedinger, K.R., Wagner, A.Z. (2004) Off-Task Behavior in the Cognitive Tutor Classroom: When Students “Game the System”. Proceedings of ACM CHI 2004: Computer-Human Interaction, 383-390.[http://www.joazeirodebaker.net/ryan/p383-baker-rev.pdf pdf]

Brown, J.S., vanLehn, K. (1980) Repair theory: A generative theory of bugs in procedural skills. Cognitive Science, 4, 379-426.

Cheng, R., Vassileva, J. (2005) Adaptive Reward Mechanism for Sustainable Online Learning Community. Proceedings of the 12th International Conference on Artificial Intelligence in Education, 152-159.

Chi, M.T.H., Bassok, M., Lewis, M.W., Reimann, P., Glaser, R. (1989) Self-Explanations: How Students Study and Use Examples in Learning to Solve Problems. Cognitive Science, 13, 145-182.

Kaminski, J.A., Sloutsky, V.M., Heckler, A. (2009) Transfer of Mathematical Knowledge: The Portability of Generic Instantiations. Child Development, 3 (3), 151-155.

Murray, R.C., vanLehn, K. (2005) Effects of Dissuading Unnecessary Help Requests While
Providing Proactive Help. Proc. of the International Conference on Artificial Intelligence in
Education, 887-889.

Rodrigo, M.M.T., Baker, R.S.J.d., Lagud, M.C.V., Lim, S.A.L., Macapanpan, A.F., Pascua, S.A.M.S., Santillano, J.Q., Sevilla, L.R.S., Sugay, J.O., Tep, S., Viehland, N.J.B. (2007) Affect and Usage Choices in Simulation Problem Solving Environments. Proceedings of Artificial Intelligence in Education 2007, 145-152. [http://www.joazeirodebaker.net/ryan/RodrigoBakeretal2006Final.pdf pdf]

Roll, I., Aleven, V., McLaren, B.M., and Koedinger, K.R. (2007) Can help seeking be
tutored? Searching for the secret sauce of metacognitive tutoring. Proceedings of
the 13th International Conference on Artificial Intelligence in Education, 203-210.

Siegler, R.S. (2002) Microgenetic Studies of Self-Explanations. In N. Granott & J. Parziale (Eds.), Microdevelopment: Transition processes in development and learning, 31-58. New York: Cambridge University.

Walonoski, J.A., Heffernan, N.T. (2006) Prevention of Off-Task Gaming Behavior in
Intelligent Tutoring Systems. Proceedings of the 8th International Conference on
Intelligent Tutoring Systems, 722-724.

=== Future Plans ===

[[Category:Data available in DataShop]]

DataShop Feature Wish List

2011-06-24T13:12:23Z

Alida: /* Prioritized Features */

Below are two lists of features. The features that we have prioritized and decided to implement are in the first, ordered list. The features that the DataShop team and community are discussing are in an unordered list on the page [[Collected User Requests]]. Click on a feature to get more information about it, such as a description, rationale for building it, and its status.

'''You can help!'''

If you think a feature is important, vote for it by putting your name to the right of the feature. Discuss the feature on the comments section of that feature's page. We'll use these votes and the dialogue that develops to prioritize features.

Don't see a feature on the prioritized list? There's a good chance it's on the '''[[Collected User Requests]]''' page. You can add feature ideas there and discuss the existing ones. Include your comment, name, and date to vote on feature ideas there.

'''Tip:''' Easily sign your username and the current date/time by inserting four tildes (<nowiki>~~~~</nowiki>); insert just your username with three tildes.

''See [[DataShop On-going Features|features we are building now]], and [[DataShop Completed Features|ones we have built]].''

== Prioritized Features ==

# [[Terms of Use]]
# [[Speed up Aggregator]]
# [[Other Analysis Outputs]]
# [[Web Services - Add Custom Fields]] (add custom fields to transactions) — Vote: Ryan Baker (1), John Stamper (1)
# [[Push Button Import]] — Carnegie Learning, John Stamper
# [[Error Bars]] — Vote: Ken Koedinger (4)
# [[Add Latency Y-axis Options]] — Vote: Ken Koedinger (3)
# [[Adding Custom Fields through Web Application]] — Vote: Ryan Baker (2)
# [[Scalability]] — Vote: Ryan Baker (4)
# [[KC Model in Transaction Export]] — Vote: Vincent Aleven (2)
# [[Student Filter Dialog]]
# [[Milliseconds]]
# [[LFA-AFM on Sample]] — Vote: Ken Koedinger (5)
# [[Place for General Papers]]
# [[Performance Metrics]]
# [[Ability to display step-custom-fields in graphs]]
# [[Add Problem Content]]
# [[Dialogue Message Format]]

== Unordered Features ==
We have a long list of feature requests that have not been prioritized. Please see the
'''[[Collected User Requests]]'''.

== How to Request a Feature ==
* [[Write a User Story]]
* [[Create a Feature Page]]
* Add Link to Feature on [[Collected User Requests]] page.
 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 5.x Features

2011-06-24T13:10:27Z

Alida:

== v5.0 April/May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

== v5.1 July 2011 ==
# [[Add Problem View to Export and Import]]
# [[KC Model Sort]]
# [[Order KCs by BIC on Primary Model]]
# [[Citations]]

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

Zhao & MacWhinney - Learning the English Article

2011-06-23T13:47:27Z

Alida: /* Summary Table */

==Summary Table==
{| border="1" cellspacing="0" cellpadding="5" style="text-align: left;"
| '''PIs''' || Yun (Helen) Zhao, Brian MacWhinney
|-
| '''Other Contributors''' || John Kowalski
|-
| '''Study Start Date''' || TBD
|-
| '''Study End Date''' || TBD
|-
| '''LearnLab Site''' || TBD
|-
| '''LearnLab Course''' || TBD
|-
| '''Number of Students''' || 161
|-
| '''Total Participant Hours''' || 213.95
|-
| '''Data available in DataShop''' || [https://pslcdatashop.web.cmu.edu/DatasetInfo?datasetId=447 Dataset: The Cognitive English Article Tutor - Study 1] 
* '''Pre/Post Test Score Data:''' Yes
* '''Paper or Online Tests:''' TBD
* '''Scanned Paper Tests:''' TBD
* '''Blank Tests:''' TBD
* '''Answer Keys: ''' TBD
|}

==Abstract==
Documentation of this study is currently in progress.

==Background and Significance==
The current project focuses on the development of a cognitive tutoring system for the teaching of English articles – one of the most difficult grammatical forms for second language learners to learn and master. Articles are particularly difficult for learners whose first language (e.g., Chinese and Japanese) does not use articles. There are three factors that make this a difficult target structure: (1) there are dozens of difficult and conflicting rules determining article choice; (2) misuses of the articles usually do not cause miscommunication and therefore learners tend to ignore these errors; and (3) classroom instruction does not provide enough opportunities for learning many of the functions and cues that determine article choice. Cognitive tutoring systems can provide address each of these problems by giving simple illustrations of relevant cues, providing consistent feedback, and sampling across a wide range of genre types and usages.

The research goal of the article tutor project is to promote robust learning and mastery of the English articles among Chinese EFL learners illuminated by principles from: (1) Experimental Psychology: Practices make perfect; Feedback promotes learning; (2) Developmental Psycholinguistics: Language is learned in context; Cue conflicts are crucial for learning; (3) Human-Computer Interaction: rule-based and exemplar-based instruction promotes learning in different ways; and (4) Second Language Acquisition: explicit types of instruction is in general more effective than implicit types of instruction; accurate metalinguistic knowledge representation is important. Synthesizing the above principles, the Cognitive Article Tutor designs exercise with nine genres of texts with rich article usages and provides explicit instruction in the form of explicit feedback.

==Glossary==
Explicit versus implicit instruction:

There is a major distinction between explicit and implicit instruction in second language teaching and learning. This distinction is often operationalized in terms of explicit and implicit feedback given to students in the instructional settings. Following Dekeyser (1995), explicit instruction consists of explicit deduction (explicit rule presentation) or explicit induction (instructions to orient learner attention to forms or to induce metalinguistic hypotheses); implicit instruction indicated that no explicit rule statement took place in the treatment and no instructions attending to particular forms or formulating metalinguistic hypothesis were given to learners. Norris & Ortega (2000) did a meta-analysis study and examined the effectiveness of instruction methods in different instructional settings. They concluded that, in general, explicit types of instruction are more effective than implicit types of instruction.

Similar to the general findings of L2 instructional studies, the available intelligent computer assisted language learning studies also suggested that explicit feedback is superior to implicit feedback especially when the learning task involves relatively complex structures whose grammatical rules are not salient in light of the examples. The most effective iCALL feedback is to “to respond to errors by giving a metalinguistic explanation in the form of a rule” (Hanson, p. 49) This general finding gives strength to the potential benefit of using cognitive tutor to teach the English articles, which is a complex and non-salient grammatical category.

==Research Questions==
Does the Cognitive Article Tutor that provides practice with corresponding explicit feedback increase L2 learners' performance of article usage in written production?

== Study One==
===Hypothesis===
The Cognitive Article Tutor that provides practice with corresponding explicit feedback helps to increase L2 learners' performance of article usage in written production.

===Independent Variables===
The independent variable of the current study is the explicit feedback provided by the Cognitive Article Tutor.

The explicit feedback of each grammatical rule is associated with one type of usage of English articles. Each explicit feedback is composed of three parts: (1) one grammatical rule name, (2) an explanation of the rule, and (3) several examples to further explain the rule. Whenever a learner make a mistake with one article choice, the tutor automatically provides explicit feedback composed of the above three levels of explanation.

For example, one rule of the English articles is named "Non-count Abstract Noun". This is a rule associated with the zero article. The rule explanation describes as follows: "The article should be omitted when referring to a non-count abstract concept, emotion, or principle, even if this noun is modified by a preceding adjective". Following that, several examples are given to further explain the rule: (a) Prudence is the better part of valor, (b) Friction tends to resist gravity, (c) Statistical analysis could clear up the issue, and (d) I strive for clarity in my prose.

===Dependent Variables===
The dependence variable of the current study is learners' performance of article usage in written production.

Norris & Ortega (2000) identified four general types of measurements in SLA studies testing the effect of explicit and/or implicit instruction: (a) metalinguistic judgments if the research participant was required to evaluate the appropriacy or grammaticality of L2 target structures as used in item prompts (e.g., grammaticality judgment tasks); (b) Selected response measures required participants to choose the correct response from a range of alternatives, typically either in answer to comprehension questions based on the use of the target L2 form(s) or in order to complete a sample segment of the target language with the appropriate target form(s) (e.g., multiple choice tests providing four options in verbal morphology); (c) constrained constructed response if they required the participant to produce the target form(s) under highly regulated circumstances, where the use of the appropriate form was essential for grammatical accuracy to occur. Constrained constructed response measures required learners to produce L2 segments ranging in length from a single word up to a full sentence, but all such measures were designed with the intent to test L2 ability to use the particular form within a highly controlled linguistic context (e.g., sentence combining with relative pronouns); (d) free constructed response measures were those measures that required participants to produce language with relatively few constraints and with meaningful communication as the goal for L2 production (e.g., oral interviews, written compositions).

Norris & Ortega (2000) suggested that the type of outcome measures used in individual studies likely affects the magnitude of observed instructional effectiveness. Average effect sizes associated with metalinguistic judgments and free constructed response measures were substantially lower than those associated with selected-response or constrained constructed-response measures. Thus, study findings within the research domain may vary by as much as 0.91 standard deviation units depending on the type of outcome measure or measures employed. Therefore Norris & Ortega suggested researchers to triangulate outcome measures in order to overcome the possible bias of particular measurement that is more likely to produce larger effect size.

To guarantee triangulation of outcome measures, the present study makes use of four outcome measures: (1) Untimed Grammaticality judgment test (~10min); (2) Untimed article choice test (~10min); (3) Timed free writing task (15min); (4) Untimed article rule explanation task (~5min).

Untimed grammaticality judgment test (GJT) is a metalinguistic judgment test, which allows us to investigate the explicit knowledge representation of learners’ acquisition of articles. In the untimed GJT, participants are asked to judge whether a sentence is grammatical or not. Both grammatical and ungrammatical sentences examining English articles as well as other grammatical categories (past tense, subjunctive mood, relative clause, third person singular) are included in the GJT as control items. Untimed article choice test is paragraph level cloze test which requires participants to fill in all the articles in the given paragraphs. Timed free writing task is to ask participants to write as much as they can within 15 minutes. The participants are given picture prompts for the writing task. The untimed article rule explanation task is to give participants sentences with correct use of English articles and to ask participants to choose from a pool of four article rule explanations to explain what are the target rules in the given sentences. Except for the free writing task, the other three tasks are graded based on the correct responses that the participants supply. The free writing task is graded with all the noun phrases identified and judged by native speakers for accuracy of usage. Each piece of writing will produce one mean accuracy rate of article usage.

===Results===
We ran a pilot study among 60 non-English major Chinese learners of English in a Chinese university in Beijing in July 2010. The purpose of the pilot study was to test the effectiveness and accessibility of the instructional materials that are going to be used in the Cognitive Article Tutor. We performed the same pre-test, immediate post-test and delayed post-test with the 60 participants. We used the instruction materials to teach the English article rules to 40 learners. The rest 20 participants received English pronunciation training during the time when the 40 participants were receiving English article instruction. At the end of the article instruction, the 40 participants were asked to fill in a questionnaire about their feedback of the article instruction. Right now we are in the process of doing data analysis and synthesizing questionnaire feedback from the 40 learners who received article instruction so that we can improve the Cognitive Article tutor instructional materials.

===Explanation===

==Connections to Other Studies==
==References==
==Future Plans==

Order KCs by BIC on Primary Model

2011-05-16T15:23:14Z

Alida:

'''Status: Design/Req'ts complete, part of KC Model Sort feature'''

== User Story ==

As a regular DataShop user, I want to know which KC Model has the best fit so that I can look at learning curves for the best model without being distracted by a lesser model.

== Notes/Comments ==

* This problem was made apparent during the December 2010 user meeting, The Introduction to DataShop Workshop. When using the Geometry Area (1996-97) dataset, the first model alphabetically is 'Area' which is a model with just 2 KCs and is not very interesting. Let's change the order of the KC Models in the Primary Model drop down menu to order by BIC, just like we do on the KC Model page. That way, users will see the best KC Model first instead of whichever one happens to be first alphabetically.

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Add Problem View to Export and Import

2011-05-16T15:22:37Z

Alida:

'''Status: Design/Req'ts complete, Estimate 18 days'''

== User Story ==

'''Transaction Export: '''
As a researcher, I want to export a dataset sample with problem view and problem start time values so that I can analyze the problem information on a transactional level. Previously problem view information was only available in the student step rollup export. 
'''Import (tab delim): '''
As a researcher I would like to include problem view and problem start time information within my tab delimited transaction file for dataset import. Likewise, when creating a new dataset out of a sample of an existing dataset, I would like the problem view and problem start time data to be preserved. Currently data is lost for Carnegie Learning munged datasets during a transaction export.

== Notes/Comments ==

Transaction Export: 
* The aggregator already creates the problem view data contained in the step_rollup table.
* The student problem rollup already produces problem_start_time values.
* Some Carnegie Learning datasets come with problem_event data and exporting would lose any of that information. DS680: (Exporting and Importing some datasets causes a loss of data on CL datasets.)
* Voted for feature prioritization at 04/21/2011 team meeting.

Import (tab delim): 
* Infrastructure for storing problem event data already exists for CL datasets.
* DS680: (Exporting and Importing some datasets causes a loss of data on CL datasets.)
* Maintains export compatibility with DS1285: (Feature: Add Problem View and Problem Start Time columns to Tx Export).
* FFI was just released with version 5.0 of DataShop. We should still be familiar with the implementation to make this change swiftly.

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Add Problem View to Export and Import

2011-05-16T15:21:51Z

Alida: /* User Story */

'''Status: Prioritization Needed'''

== User Story ==

'''Transaction Export: '''
As a researcher, I want to export a dataset sample with problem view and problem start time values so that I can analyze the problem information on a transactional level. Previously problem view information was only available in the student step rollup export. 
'''Import (tab delim): '''
As a researcher I would like to include problem view and problem start time information within my tab delimited transaction file for dataset import. Likewise, when creating a new dataset out of a sample of an existing dataset, I would like the problem view and problem start time data to be preserved. Currently data is lost for Carnegie Learning munged datasets during a transaction export.

== Notes/Comments ==

Transaction Export: 
* The aggregator already creates the problem view data contained in the step_rollup table.
* The student problem rollup already produces problem_start_time values.
* Some Carnegie Learning datasets come with problem_event data and exporting would lose any of that information. DS680: (Exporting and Importing some datasets causes a loss of data on CL datasets.)
* Voted for feature prioritization at 04/21/2011 team meeting.

Import (tab delim): 
* Infrastructure for storing problem event data already exists for CL datasets.
* DS680: (Exporting and Importing some datasets causes a loss of data on CL datasets.)
* Maintains export compatibility with DS1285: (Feature: Add Problem View and Problem Start Time columns to Tx Export).
* FFI was just released with version 5.0 of DataShop. We should still be familiar with the implementation to make this change swiftly.

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Add Problem View to Export and Import

2011-05-16T15:20:59Z

Alida:

'''Status: Prioritization Needed'''

== User Story ==

Transaction Export: 
As a researcher, I want to export a dataset sample with problem view and problem start time values so that I can analyze the problem information on a transactional level. Previously problem view information was only available in the student step rollup export. 
Import (tab delim): 
As a researcher I would like to include problem view and problem start time information within my tab delimited transaction file for dataset import. Likewise, when creating a new dataset out of a sample of an existing dataset, I would like the problem view and problem start time data to be preserved. Currently data is lost for Carnegie Learning munged datasets during a transaction export.

== Notes/Comments ==

Transaction Export: 
* The aggregator already creates the problem view data contained in the step_rollup table.
* The student problem rollup already produces problem_start_time values.
* Some Carnegie Learning datasets come with problem_event data and exporting would lose any of that information. DS680: (Exporting and Importing some datasets causes a loss of data on CL datasets.)
* Voted for feature prioritization at 04/21/2011 team meeting.

Import (tab delim): 
* Infrastructure for storing problem event data already exists for CL datasets.
* DS680: (Exporting and Importing some datasets causes a loss of data on CL datasets.)
* Maintains export compatibility with DS1285: (Feature: Add Problem View and Problem Start Time columns to Tx Export).
* FFI was just released with version 5.0 of DataShop. We should still be familiar with the implementation to make this change swiftly.

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Add Problem View to Export and Import

2011-05-16T15:19:12Z

Alida: New page: '''Status: Prioritization Needed''' == User Story == As a researcher, I want to export a dataset sample with problem view and problem start time values so that I can analyze the problem ...

'''Status: Prioritization Needed'''

== User Story ==

As a researcher, I want to export a dataset sample with problem view and problem start time values so that I can analyze the problem information on a transactional level. Previously problem view information was only available in the student step rollup export.

== Notes/Comments ==

* The aggregator already creates the problem view data contained in the step_rollup table.
* The student problem rollup already produces problem_start_time values.
* Some Carnegie Learning datasets come with problem_event data and exporting would lose any of that information. DS680: (Exporting and Importing some datasets causes a loss of data on CL datasets.)
* Voted for feature prioritization at 04/21/2011 team meeting.

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

DataShop 5.x Features

2011-05-16T15:13:14Z

Alida: /* v5.1 July 2011 */

== v5.0 April/May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

== v5.1 July 2011 ==
# [[Add Problem View to Export and Import]]
# [[KC Model Sort]]
# [[Order KCs by BIC on Primary Model]]
# [[Citations]]
# [[Terms of Use]]

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

Terms of Use

2011-05-16T15:08:31Z

Alida:

'''Status: Design/Req'ts complete, part of Citations feature'''

== User Story ==

As a provider of data, I want to have the users of the data agree to a terms of use, so that I can ...

== Notes/Comments ==

* I think that all datasets (including Carnegie Learning's) should have a click-through "terms of use" agreement. - Steve Ritter, email, 10/23/2009

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Citations

2011-05-16T15:07:46Z

Alida:

'''Status: Design/Req'ts complete, Estimate 12 days'''

== User Story ==

As a primary investigator, I want researchers who use my dataset to cite the correct paper or URL so that I can be recognized for my work.

== Notes/Comments ==

* Show a message on export, to tell user what to cite, show them a citation. Include DataShop URL and paper.
* Create a field on Dataset Info to enter a citation (or an "acknowledgement"?) for the dataset. Could be a paper citation or a website URL, for example. As a result, the exports from DataShop (transaction, student-step, student-problem--the latter two are not yet zips but would need to be) should include a small text file that includes the content of the citation (maybe prefaced with: "If you use this dataset in your research, please cite it as follows:") -- Steve Ritter & John Stamper, User Meeting, December 2010

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

Order KCs by BIC on Primary Model

2011-05-16T15:07:17Z

Alida:

'''Status: Design/Req'ts complete, part of KC Model Sort'''

== User Story ==

As a regular DataShop user, I want to know which KC Model has the best fit so that I can look at learning curves for the best model without being distracted by a lesser model.

== Notes/Comments ==

* This problem was made apparent during the December 2010 user meeting, The Introduction to DataShop Workshop. When using the Geometry Area (1996-97) dataset, the first model alphabetically is 'Area' which is a model with just 2 KCs and is not very interesting. Let's change the order of the KC Models in the Primary Model drop down menu to order by BIC, just like we do on the KC Model page. That way, users will see the best KC Model first instead of whichever one happens to be first alphabetically.

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

KC Model Sort

2011-05-16T15:06:37Z

Alida:

'''Status: Design/Req'ts complete, Estimate 3 days'''

== User Story ==
As a researcher comparing KC Models, I want to be able to sort the KC Models on the KC Models page so that I can compare the models easily.

== Notes/Comments ==

* Allow sort on: BIC, AIC, Log Likelihood, date, and current sort (type, owner) [Ken Team Meeting October 2008]
* Currently (Nov 2008), there is only one dataset for which this is an issue.

 
----
See completed [[DataShop 3.x Features]] 
See on-going [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Feature]]

DataShop Completed Features

2011-05-16T15:03:59Z

Alida:

* [[DataShop 3.x Features]]
* [[DataShop 4.x Features]]
* [[DataShop_5.x_Features#v5.0_April.2FMay_2011|DataShop 5.0 Features]]

 
----
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 5.x Features

2011-05-16T15:02:41Z

Alida: /* v5.1 July 2011 */

== v5.0 April/May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

== v5.1 July 2011 ==
# [[Add Problem View to Export and Import]]
# [[KC Model Sort]]
# [[Order KCs by BIC on Primary Model]] — Vote: Ken Koedinger
# [[Citations]] — Vote: Steve Ritter
# [[Terms of Use]] — Steve Ritter

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop Feature Wish List

2011-05-16T15:02:25Z

Alida: /* Prioritized Features */

Below are two lists of features. The features that we have prioritized and decided to implement are in the first, ordered list. The features that the DataShop team and community are discussing are in an unordered list on the page [[Collected User Requests]]. Click on a feature to get more information about it, such as a description, rationale for building it, and its status.

'''You can help!'''

If you think a feature is important, vote for it by putting your name to the right of the feature. Discuss the feature on the comments section of that feature's page. We'll use these votes and the dialogue that develops to prioritize features.

Don't see a feature on the prioritized list? There's a good chance it's on the '''[[Collected User Requests]]''' page. You can add feature ideas there and discuss the existing ones. Include your comment, name, and date to vote on feature ideas there.

'''Tip:''' Easily sign your username and the current date/time by inserting four tildes (<nowiki>~~~~</nowiki>); insert just your username with three tildes.

''See [[DataShop On-going Features|features we are building now]], and [[DataShop Completed Features|ones we have built]].''

== Prioritized Features ==

# [[Speed up Aggregator]]
# [[Other Analysis Outputs]]
# [[Web Services - Add Custom Fields]] (add custom fields to transactions) — Vote: Ryan Baker (1), John Stamper (1)
# [[Push Button Import]] — Carnegie Learning, John Stamper
# [[Error Bars]] — Vote: Ken Koedinger (4)
# [[Add Latency Y-axis Options]] — Vote: Ken Koedinger (3)
# [[Adding Custom Fields through Web Application]] — Vote: Ryan Baker (2)
# [[Scalability]] — Vote: Ryan Baker (4)
# [[KC Model in Transaction Export]] — Vote: Vincent Aleven (2)
# [[Student Filter Dialog]]
# [[Milliseconds]]
# [[LFA-AFM on Sample]] — Vote: Ken Koedinger (5)
# [[Place for General Papers]]
# [[Performance Metrics]]
# [[Ability to display step-custom-fields in graphs]]
# [[Add Problem Content]]
# [[Dialogue Message Format]]

== Unordered Features ==
We have a long list of feature requests that have not been prioritized. Please see the
'''[[Collected User Requests]]'''.

== How to Request a Feature ==
* [[Write a User Story]]
* [[Create a Feature Page]]
* Add Link to Feature on [[Collected User Requests]] page.
 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 5.x Features

2011-05-16T15:02:08Z

Alida:

== v5.0 April/May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

== v5.1 July 2011 ==
# ...

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop Feature Wish List

2011-05-16T14:54:05Z

Alida:

Below are two lists of features. The features that we have prioritized and decided to implement are in the first, ordered list. The features that the DataShop team and community are discussing are in an unordered list on the page [[Collected User Requests]]. Click on a feature to get more information about it, such as a description, rationale for building it, and its status.

'''You can help!'''

If you think a feature is important, vote for it by putting your name to the right of the feature. Discuss the feature on the comments section of that feature's page. We'll use these votes and the dialogue that develops to prioritize features.

Don't see a feature on the prioritized list? There's a good chance it's on the '''[[Collected User Requests]]''' page. You can add feature ideas there and discuss the existing ones. Include your comment, name, and date to vote on feature ideas there.

'''Tip:''' Easily sign your username and the current date/time by inserting four tildes (<nowiki>~~~~</nowiki>); insert just your username with three tildes.

''See [[DataShop On-going Features|features we are building now]], and [[DataShop Completed Features|ones we have built]].''

== Prioritized Features ==

# [[Add Problem View to Export and Import]]
# [[KC Model Sort]]
# [[Order KCs by BIC on Primary Model]] — Vote: Ken Koedinger
# [[Citations]] — Vote: Steve Ritter
# [[Terms of Use]] — Steve Ritter
# [[Speed up Aggregator]]
# [[Other Analysis Outputs]]
# [[Web Services - Add Custom Fields]] (add custom fields to transactions) — Vote: Ryan Baker (1), John Stamper (1)
# [[Push Button Import]] — Carnegie Learning, John Stamper
# [[Error Bars]] — Vote: Ken Koedinger (4)
# [[Add Latency Y-axis Options]] — Vote: Ken Koedinger (3)
# [[Adding Custom Fields through Web Application]] — Vote: Ryan Baker (2)
# [[Scalability]] — Vote: Ryan Baker (4)
# [[KC Model in Transaction Export]] — Vote: Vincent Aleven (2)
# [[Student Filter Dialog]]
# [[Milliseconds]]
# [[LFA-AFM on Sample]] — Vote: Ken Koedinger (5)
# [[Place for General Papers]]
# [[Performance Metrics]]
# [[Ability to display step-custom-fields in graphs]]
# [[Add Problem Content]]
# [[Dialogue Message Format]]

== Unordered Features ==
We have a long list of feature requests that have not been prioritized. Please see the
'''[[Collected User Requests]]'''.

== How to Request a Feature ==
* [[Write a User Story]]
* [[Create a Feature Page]]
* Add Link to Feature on [[Collected User Requests]] page.
 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 5.x Features

2011-05-16T14:39:32Z

Alida:

== v5.0 April/May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 5.x Features

2011-05-16T14:39:14Z

Alida:

== v5.0 April/May 2011 ==
# [[Flat File Importer]]
# [[Pre and Post Test Data]]

 
----
See completed [[DataShop 3.x Features]] 
See completed [[DataShop 4.x Features]] 
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

DataShop 4.x Features

2011-05-16T14:38:17Z

Alida:

== v4.0 December 2009 ==
# [[Web Services - Get Transactions and Student-Step Records]]
# [[Project Announcements in DataShop Web Application]]
# [[Learning Curve Point Info Details: Add Frequency]]
# [[Rename Pound Sign|Rename Pound Sign to Row in all 4 exports]]
# [[Condition in Student-Step Rollup]] — Vote: Ken Koedinger(2), Vincent Aleven(3)
# [[DS995]] information on cached transaction files

== v4.1 May 2010 ==
# Bug fixes

== v4.2 August 2010 ==
# [[Metrics]]

== v4.3 September 2010 ==

# Bug fixes

== v4.4 December 2010 ==
# [[DB Merge]]
# [[Unique File Name on Export]]
# [[Rename LFA to AFM]]
# [[KCM Cross Validation Values]]

 
----
See completed [[DataShop 3.x Features]] 
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See prioritized [[DataShop Feature Wish List]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]

Rename LFA to AFM

2011-05-16T14:37:01Z

Alida:

'''Status: Done (DataShop v4.4 December 2010)'''

== User Story ==

As a [type of user], I want to [perform some task] so that I can [achieve some goal].

== Notes/Comments ==

* It is a misnomer to refer to the results of the Additive Factors Model (AFM) on the DataShop user interface as 'LFA values'. As we no longer use CFM, maybe we should label the BIC and AIC values as AFM values instead of LFA values. LFA (Learning Factors Analysis) is actually about generating new skill models from factors.

 
----
See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Completed Feature]]

Unique File Name on Export

2011-05-16T14:36:35Z

Alida:

'''Status: Done (DataShop v4.4 December 2010)'''

== User Story ==

As a researcher doing many exports, I’d like a unique file name for exports so that they are easier to keep track of.

== Notes/Comments ==

* We get a proliferation of export.zip / export(1).zip, etc files over time because DataShop uses the same name (export.zip) for the export each time. (Ruth Wylie, 12/07/2009, User Meeting)
** One possible solution: export_2010_01_19_151509.zip (date-time uniquely names the file)

 
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See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Completed Feature]]

DB Merge

2011-05-16T14:36:03Z

Alida:

'''Status: Done (DataShop v4.4 December 2010)'''

== User Story ==

As a DataShop administrator, I want to merge two analysis databases, so that I can get a mysql dump from Tristan at Carnegie Learning instead of running the munger.

== Notes/Comments ==
* Carnegie Learning maintains a database equivalent to the DataShop analysis_db schema. They log their tutoring data to a file and then use their Munger tool to import it to their database. Previously, we used the same Munger on our database to import their logged data, which was slow and redundant. The idea of DBMerge is after Carnegie Learning has munged the data to their database they can perform a sql database dump to give us. DataShop will create a new database identical to analysis_db to import the db file to. A new stored procedure will be run to quickly integrate analysis_db with the Carnegie Learning data while maintaining key integrity.
* Carnegie Learning has a massive amount of data already in our format but not in DataShop yet, with the potential to at least double, the amount of data in the repository.
* Eliminates some of the manual workflow of munging one dataset at a time.
* Prerequisite for redesign of the import tool and future database changes
* [[User:Alida|Alida]] 14:48, 10 September 2010 (EDT)

 
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See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
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[[Category:Protected]]
[[Category:DataShop]]
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Metrics

2011-05-16T14:35:24Z

Alida:

'''Status: Done (DataShop v4.2 August 2010)'''

== User Story ==

As an administrator of DataShop, I want to see dataset metrics that are updated at a regular interval so that we can easily put tables on posters for important meetings such as NSF Site Visits, Advisory Board Visits, etc.

== Notes/Comments ==

* Eventually we'd like to graph this data over time. -- I really like this idea! [Ryan Baker]

 
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See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Completed Feature]]

DS995

2011-05-16T14:34:47Z

Alida:

'''Status: Done (DataShop v4.0 December 2009)'''

== User Story ==

As a user exporting transaction data, I want to know if the cached file differs from the latest data in the database and what I can do about it if I need more recent data.

== Notes/Comments ==

* Bruce McLaren noticed that in his new dataset "Pittsburgh Science of Learning Center Stoichiometry Study 5" (dataset_id 268 on production) that for several rows there are missing delimiters, causing display issues starting at or around the "Condition Name" column.
** If the Sample has been modified in some way, but has not been re-cached, the preview is getting data directly from the database, but the export will deliver the now out of date export file. Both the preview and the export should have the same data, so that users are not concerned about which is the "real" data. [Jim]
** We can accomplish this by always using cache file data for both preview and export when a cached file is available. However, the user also needs to know the "freshness" of the data he is looking at. When a sample needs to be re-cached, there needs to be a prominent message making clear the time that the export file was created, so that the user knows any data added or changed since then will not be reflected in the preview or the export. [Jim]

 
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See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Completed Feature]]

Condition in Student-Step Rollup

2011-05-16T14:34:24Z

Alida:

'''Status: Done (DataShop v4.0 December 2009)'''

== User Story ==

As a researcher, I'd like to see the condition included in the student-step rollup table, so that I can compare across conditions using the data in this format.

== Notes/Comments ==

* "Is the condition supposed to be included in the step rollup table? Datasets, 'Example Wilkinsburg Spring 2007' and 'Example CWCTC Spring 2007' don't seem to have them in the step rollup data." -- Vincent 4/25/2008
** "In my experience, when you analyze data from an experiment, you (pretty much) invariably want to compare what was different between your conditions. The reason for having the tutor data is typically to examine whether any differences, between the conditions, in the students' learning outcomes (i.e., pre/post test gains) can be explained in terms of differences during their learning process (i.e., the differences in the log data - more errors, more hints, steeper learning curves, etc.). Without the condition data you would not be able to do this. (And so with the step rollup table, it means we need to extract the condition information from transaction table, and then insert it in the step rollup table. Doable, but work that the DataShop could have done for us, especially given that I would think that this is an oft-recurring need.)
** So I would say anytime you export something from DataShop, having the condition in there is a good thing.
** (BTW, is there an easy way to get a student-condition table out of the DataShop? If that were so, then having the condition information in any and all exports is less critical.)"
* Alida, 4/30/2008: You can create a sample per condition, then select all those samples and then export the Step Rollup Table. Sample is one of the columns in the Step Rollup Table and export. This would be better than trying to get the same information from a transaction export.
* Ken, 8/14/2009: To use the step roll-up table in 'R', the condition is important in this table.  Also take out the '#' sign from the headers as that is a comment and causes problems in 'R'. [Ken Meeting 8/14/2009]
* How to show the conditions, multiple columns? one column? use labels or 1's and 0's? -- [[User:Koedinger|Koedinger]], DataShop Team Meeting, Aug 28, 2009
** Variable number of condition columns in step rollup is OK, but so is concatenating condition names with a delimiter in between them.
* Vincent votes for a single column describing condition.
** By definition, each student is in one condition, so a single column should suffice. (I believe what you are describing is a "factor" in a factorial design. That could be useful but could always be derived from the condition in a very straightforward manner. And vice versa. So to keep things simple I'd go with a single column. -- Vincent email 9/3/2009

 
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See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Completed Feature]]

Rename Pound Sign

2011-05-16T14:33:53Z

Alida:

'''Status: Done (DataShop v4.0 December 2009)'''

== User Story ==

As a researcher using the 'R' statistical package, I want to immediately load the student-step rollup export document so that I can continue my analysis there.

== Notes/Comments ==

* The current student-step rollup export (really, all exports) should be such that I can immediately load it into R (and other packages) without error. Now errors occur, for instance, because there are "#" in the variable names i the student-step rollup. However, it is currently a road-block for helping folks like Bob do analyzes they want to do. --Koedinger 16:30, 16 September 2009 (EDT)

 
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See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Completed Feature]]

Learning Curve Point Info Details: Add Frequency

2011-05-16T14:33:35Z

Alida:

'''Status: Done (DataShop v4.0 December 2009)'''

== User Story ==
As a user of the learning curve point info details feature, I want to see the frequency of each item in the detailed list of items (KCs, students, problems, steps), so that I can see the difference more clearly.

== Notes/Comments ==

* Ken, Meeting 7/10/2009: In the learning curve point info details, have a column that gives the frequency (% the number of observations divided by the total observations) or just the number of observations. Maybe showing 'Observations' is best as the title is easy to figure out.
** Example: Geometry 96 dataset, zoomed in circle-area, at opp 5, which steps...go back one opp, what's the difference.

 
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See [[DataShop Completed Features|completed features]] 
See [[DataShop On-going Features|on-going features]] 
See unordered [[Collected User Requests]] 
See the [[:Category:DataShop Glossary|DataShop Glossary]]
[[Category:Protected]]
[[Category:DataShop]]
[[Category:DataShop Completed Feature]]