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Project 7: Testing Suggested Modifications to a User Interface for Source Code Search

Project 7: Testing Suggested Modifications to a User Interface for Source Code Search. Customer : Rosalva Gallardo Team members : Susan Lin Buda Chiou Jim Milewski Marcos Mercado November 23, 2010. Agenda. Primary Purpose Method Overview Usability experiments Data Collection

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Project 7: Testing Suggested Modifications to a User Interface for Source Code Search

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  1. Project 7: Testing Suggested Modifications to a User Interface for Source Code Search Customer: Rosalva Gallardo Team members: Susan Lin Buda Chiou Jim Milewski Marcos Mercado November 23, 2010

  2. Agenda • Primary Purpose • Method Overview • Usability experiments • Data Collection • Preliminary Results • Current Status and Updated Project Plan • Q&A

  3. Primary Purpose • Does the new “treatment” interface improve the usability of the metrics?

  4. Primary Purpose • Does the new “treatment” interface improve the usability of the metrics? Introduced sort functionality for metrics

  5. Primary Purpose • Does the new “treatment” interface improve the usability of the metrics? Changed the presentation of the metrics

  6. Primary Purpose • Does the new “treatment” interface improve the usability of the metrics? Included a mix of graphics and text for the “Reviews” metric

  7. Primary Purpose • Does the new “treatment” interface improve the usability of the metrics? Introduced Reviewer’s information

  8. Method Overview • Pilot test plus 15 usability experiments performed in the Hana Lab • Average experiment time 1.5 hours • Some experiments ran in parallel. • Monetary compensation and incentive provided to accomplish tasks.

  9. Experiment Structure • Experiments were run according to client’s Handbook for Source Code Retrieval Experiment. • Welcome and study information sheet/consent • Instructions to subject and general scenario • Practice task with scenario • 4 Experiment Tasks with scenarios and post-task questionnaires • Participant’s background questionnaire • Debriefing Interview

  10. Data Collection • Think aloud protocol • Excel file filled in while participant performed the tasks • Morae recording • Questionnaire after each task • Debriefing interview • Subject background questionnaire

  11. More data capture: Morae to Excel • Video recordings analyzed (1 video = 5.5 hours) • Before and after pages highlighting some of the changes • e.g. you needed to capture the observations of the participants and couldn’t really focus on how quickly they were switching between screens • Seconds, Observations, Candidates

  12. Preliminary Results

  13. Preliminary Results

  14. Preliminary Results

  15. Preliminary Results

  16. Preliminary Conclusions • Similar trend is observed except for Reviews where we combined graphics and text • Increase of Reviews usage • New layout for metrics presented in text only did not alter the trend.

  17. Project Plan

  18. Q&A

  19. Previous Presentation

  20. Project background & overview • Original Experiment • Customer goals were: • Understand the strategies and information software developers use when they select a source code search result from the Web • Identify the relationship among strategies, information used, and successful completion of the experiment’s tasks.

  21. Project background & overview • New Experiment • Customer goals are: • Same as in the original experiment • Analyze how an enhanced GUI will influence users’ decisions on the information they use. • Variants: • New participants • Use of an enhanced treatment GUI • Use of a log mechanism to assist in the collection of experiment data related to GUI usage.

  22. Project phases • Implement user interface enhancements to experiment’s treatment GUI. • Implement an automated log mechanism to capture certain events during GUI usage. • Conduct new experiment • Analysis of results

  23. Usability problems that we’re dealing with

  24. Usability problems that we’re dealing with

  25. Comparative Analysis • Google Code, Koders.com, Source Forge, Ohloh

  26. Prototypes

  27. http://www.jimsplace949.com/GUIFinal2.aspx

  28. Methods that the team is going to employ to address the usability problems (continued) • Number & type of users: • 16 ICS students with experience in Java (13 graduate-level and 3 undergraduate). • Tasks for users and questions we will ask them: • CSV task: Find the best source code to read a CSV file and place the data into a list of strings. • DIFF task: Find the best source code to compare two text files and show the differences. • EMAIL VALIDATION task: Find the best source code to validate email addresses. • TIMEZONE task: Find the best source code to convert date & time between different time zones.

  29. Methods that the team is going to employ to address the usability problems (continued) • Strategies for involving users • Recruitment email • Use of incentives • Where… • Will meet them in the Hana Lab • Each meeting will last 1.5-2 hrs

  30. Project Plan overview http://www.jimsplace949.com/ProjPlan_Project7_SrcCdSrchExperiment.html

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