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Oral defences & examinations, Thesis defences

Masters Thesis Defense: Mehran Jodavi

Friday, November 26, 2021
10 a.m. – 12 p.m.

This event is free






Computer Science & Software Engineering 


Notice of Thesis Defence 



Faculty, Graduate Students and Guests



Dr. Kosseim, Graduate Program Director, Computer Science & Software Engineering


You are invited to attend the following Master of Computer Science thesis examination: 



Mehran Jodavi


Thesis Title:

Accurate Program Element Tracking in Commit History


Date & Time: 

November 26th, 2021 @ 10:00 AM





Examining Committee:


Dr. Joey Paquet



Dr. Nikolaos Tsantalis



Dr. Tse-Hsun (Peter) Chen



Dr. Joey Paquet






Tracking program elements in the commit history of a project is essential for supporting various software maintenance, comprehension and evolution tasks. Accuracy is of paramount importance for the adoption of program element tracking tools by developers and researchers. To this end, we propose CodeTracker, a refactoring-aware tool that can generate the commit change history for method and variable declarations with a very high accuracy. More specifically, CodeTracker has 99.9% precision and recall in method tracking, surpassing the previous state-of-the-art tool, CodeShovel, with a comparable execution time. CodeTracker is the first tool of its kind that can track the change history of variables with 96.7% precision and 95.5% recall. To evaluate its accuracy in variable tracking, we extended the oracle created by Grund et al. for the evaluation of CodeShovel, with the complete change history of all 1346 variables and parameters declared in the 200 methods comprising the Grund et al. oracle. We make our tool and extended oracle publicly available to enable the replication of our experiments and facilitate future research on program element tracking techniques.

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