CSC/ECE 517 Fall 2014/final E1471 asuv
Expertiza - Information Display and Student Interaction
Expertiza is a web application developed using Ruby on Rails that serves as a peer-review system. The application allows students to submit and peer-review learning objects (articles, code, web sites, etc)<ref>Expertiza on GitHub</ref><ref>Expertiza Wiki Page</ref>. It is an open source project and its codebase is maintained in GitHub.
Introduction
Our contribution in this project would be to improve the display of questionnaires for all the instructors and also integrating a previous project which provides a new dashboard for students to view and compare their performance of each assignment.
Current State
- In the current state instructor should go through all the questionnaires to find the one they are looking for.
- The keyword search functionality is not yet implemented for questionnaires.
- The current student dashboard provides the average score and range of the student’s assignment, review and final score.
- The system has a limitation where in a student/instructor cannot view and compare the student scores based on the class performance.
Goals
- As a part of our project we will implement the search functionality and also make it possible to click and bring up a list of questionnaires used in the course, expanding only the applicable questionnaires in the list of questionnaires.
- A project from last year has the implementation for the new student dashboard. We would like to take that project, make the required changes to it and integrate it into expertiza.
- This new dashboard gives the students a comparative statistics for that particular assignment for the entire class.
- Giving the min, mean and max gives the student a range to judge where they stand with respect to the class.
- Other features were part of the project were to show the number of reviews and metareviews he/she has done for this assignment and also based on a threshold what are the number of reviews/metareviews the student still needs to do.
- A histogram distribution of the scores of the class (all teams) for that assignment would also shown as a part of the dashboard.
Approach
As the project was originally assigned to students two years ago, the functionality is mostly complete. The main concern is that, as the project was completed a significant amount of time ago (in December 2012), it was made for an older version of rails.
General Approach
Our general approach to the project would be as follows:
- Run the current project with rails 4
- Check the functionality to find out the incompatible and missing parts
- Refactor the parts of code that do not function as expected and port them to rails 4 specification
- After making sure everything runs, refactor the entire code to make sure it follows the global code rules.
Specific Approach
The specific approach to each of the two functionality is as follows:
Better display for assignments
We found that while the currently existing code covers most of the functionality, a major part of the functionality is missing. According to definition, the instructor should see the following on his home page:
- The instructor's courses
- Assignments for those courses
- Questionnaire by assignment name
Each of these should be compressed to titles only, and it should be possible to expand them by single mouse click. Each course should have its own list of assignments which can, again, be expanded. Also, there is a search box on the page which allows to search assignments, courses and questionnaires.
The search functionality for assignments and courses is working well, but the search for questionnaires is not implemented.
So, for this specific project, we plan to focus on implementing the search for questionnaires first. Then, integrate it all and test each functionality: make sure that nothing is affected by the new functionality added. After all the tests are performed, we will merge the project with the main project, thus integrating it with the final build.
Dashboard for students
The features required for the dashboard for students project have already been implemented. So, the main task to be performed by us is to merge the project files with the main project and make sure that nothing else is affected by the process.
The current code is able to display the maximum scores, average scores, number of reviews and distribution charts.
Files involved
Files to be merged : Dashboard for students
- Model ScoreCache.rb
- View grades\view_my_scored.html.erb
- Controller grades_controller.rb, review_mapping_controller.rb,response_controller.rb
- Database tables Assignments,Participants, score_caches, response_maps,responses
Functionality of each file
| Sr. No. | File Name | Type | Functionality involved for implementation |
|---|---|---|---|
| 1 | ScoreCache.rb
|
Model | Makes an entry into score_cache table whenever a response is given/edited |
| 2 | grades\view_my_scores.html.erb
|
View | Modified in order to display all new features |
| 3 | grades_controller.rb
|
Controller | To get information all information about an assignment and its score which is average score of all reviews and plotting the graph for grade distinction |
| 4 | review_mapping_controller.rb
|
Controller | To get additional information about assignment like total reviews submitted |
| 5 | Assignments
|
Table | All information related to assignment |
| 6 | Responses
|
Table | Stores individual assignment review response information |
| 7 | Score_caches
|
Table | Stores individual assignment review score information |
| 8 | response_maps
|
Table | Mapping between response, reviewer and reviewee |
Files to be changed : Better display of assignment
- Model course_node.rb,assignment_node.rb,questionnaire_node.rb
- View tree_display\ _row_header.html.erb,tree_display\ _entry.html.erb,tree_display/actions/_courses_actions.html.erb
- Controller tree_display controller.rb,course_controller.rb,assignment_controller.rb,questionnaire_controller.rb
- JavaScript tableactions.js
Functionality of each file
| Sr. No. | File Name | Type | Functionality involved for implementation |
|---|---|---|---|
| 1 | course_node.rb
|
Model | To fetch information about all course none in the system |
| 2 | assignment_node.rb
|
Model | To fetch information about all assignment node in the system |
| 3 | questionnaire_node.rb
|
Model | To fetch information about all questionnaire node in the system |
| 4 | tree_display\ _row_header.html.erb
|
View | Display of header in a row |
| 5 | tree_display\ _entry.html.erb
|
View | Display entity in a row |
| 6 | tree_display/actions/_courses_actions.html.erb
|
View | Display separate actions on each row |
| 7 | course_controller.rb
|
Controller | Provides various course related functions |
| 8 | assignment_controller.rb
|
Controller | Provides various assignment related functions |
| 9 | questionnaire_controller.rb
|
Controller | Provides various questionnaire related functions |
| 10 | tree_display controller.rb
|
Controller | For direct access to every entity like questionnaires, review rubric etc.. |
Use case
For the instructor, there needs to be a way to quickly find rubrics (and other questionnaires) that have been used in a single course. It should be possible to search or click somewhere to bring up a list of questionnaires used in the course, expanding only the applicable questionnaires in the list of questionnaires. A search functionality for questionnaire is expected. Currently, assignment and course searches is implemented, and there is a dropdown for questionnaire, but it's functionality is missing.
Actor: Instructot
Other Participants: None
Precondition: There are few questionnaires in the system
Primary Sequence:
1. Log in to Expertiza
2. Instructor lands on "Manage content" page
3. Search for a questionnaire, by selecting questionnaire in the search dropdown and input some search string
4. Search results displayed, expanding only the applicable questionnaires in the list of questionnaires
The following use case diagram shows the system of Assignment grades for a student on Expertiza as it is depicted right now. These include viewing their own project submission (with url and attachments), reviews and metareviews on their work, author feedbacks, teammate reviews and their final score on that assignment/project.<ref>Previous year's design document for E715: Dashboard for Students by Ambika Tripathi, Milan Tonse, Krutika Nagar, Shruti Buch</ref> As part of this project we shall be adding more data on this page, so that student has better understanding of his/her marks.
Name: Students viewing scores for the assignment
Actor: Student
Other Participants: None
Precondition: Statistics have been recorded for average high and low scores.
Primary Sequence:
1. Log in to Expertiza
2. Select an assignment
3. Select Your Scores
4. Click on the link for view class scores for this assignment.
5. View the average, high and low class score for that particular assignment
Name: Students viewing graphical output for scores for the assignment
Actor: Student
Other Participants: None
Precondition: Statistics have been recorded for average high and low scores.
Primary Sequence:
1. Log in to Expertiza
2. Select an assignment
3. Select Your Scores
4. Click on the link for view class scores for this assignment.
5. View the graphical output for average, high and low class score for that particular assignment
Name: Students viewing number of reviews done by him/her
Actor: Student
Other Participants: None
Precondition: Statistics have been recorded for number of reviews done by the student.
Primary Sequence:
1. Log in to Expertiza
2. Select an assignment
3. Select Your Scores
4. Click on the link for my reviews for this assignment.
5. View the number of reviews the student has done for that particular assignment and also the
number of reviews he still has to do to reach the threshold.
Name: Students viewing number of metareviews done by him/her
Actor: Student
Other Participants: None
Precondition: Statistics have been recorded for number of metareviews done by the student.
Primary Sequence:
1. Log in to Expertiza
2. Select an assignment
3. Select Your Scores
4. Click on the link for my metareviews for this assignment.
5. View the number of metareviews the student has done for that particular assignment and also
the number of metareviews he still has to do to reach the threshold.
Name: Students viewing average number of class reviews for the assignment
Actor: Student
Other Participants: None
Precondition: Statistics have been recorded for class reviews for that assignment.
Primary Sequence:
1. Log in to Expertiza
2. Select an assignment
3. Select Your Scores
4. Click on the link for view class reviews for this assignment.
5. View the average number of class reviews for that particular assignment
Name: Students viewing average number of class metareviews for the assignment
Actor: Student
Other Participants: None
Precondition: Statistics have been recorded for class metareviews for that assignment.
Primary Sequence:
1. Log in to Expertiza
2. Select an assignment
3. Select Your Scores
4. Click on the link for view class metareviews for this assignment.
5. View the average number of class metareviews for that particular assignment
UML diagram
Following is class diagram for Assignment display module. <ref>Previous year's design document for E707: Better display for assignments by Bharath Sampath(bsampat2),Prakash Vasudevan(pvasude),Raghavendran Nedunchezhian(rnedunc), Yuchuan Liu(yliu63)</ref>
Following is class diagram for Dashboard for students module.
References
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