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ICSE 2019
Sat 25 - Fri 31 May 2019 Montreal, QC, Canada
Fri 31 May 2019 11:30 - 11:50 at Laurier - Defect Prediction Chair(s): Burak Turhan

Just-in-Time Software Defect Prediction (JIT-SDP) is an SDP approach that makes defect predictions at the software change level. Most existing JIT-SDP work assumes that the characteristics of the problem remain the same over time. However, JIT-SDP may suffer from class imbalance evolution. Specifically, the imbalance status of the problem (i.e., how much underrepresented the defect-inducing changes are) may be intensified or reduced over time. If occurring, this could render existing JIT-SDP approaches unsuitable, including those that re-build classifiers over time using only recent data. This work thus provides the first investigation of whether class imbalance evolution poses a threat to JIT-SDP. This investigation is performed in a realistic scenario by taking into account verification latency – the often overlooked fact that labeled training examples arrive with a delay. Based on 10 GitHub projects, we show that JIT-SDP suffers from class imbalance evolution, significantly hindering the predictive performance of existing JIT-SDP approaches. Compared to state-of-the-art class imbalance evolution learning approaches, the predictive performance of JIT-SDP approaches was up to 47.92% lower in terms of g-mean. Hence, it is essential to tackle class imbalance evolution in JIT-SDP. We therefore propose a novel class imbalance evolution approach for the specific context of JIT-SDP. While maintaining top ranked g-means, this approach managed to produce up to 12% more balanced recalls on the defect-inducing and clean classes than state-of-the-art class imbalance evolution approaches. We thus recommended it to avoid overemphasizing the defect-inducing class at the cost of too many false alarms in JIT-SDP.

Fri 31 May

icse-2019-Paper-Presentations
11:00 - 12:30: Papers - Defect Prediction at Laurier
Chair(s): Burak TurhanMonash University
icse-2019-Journal-First-Paper11:00 - 11:10
Talk
Zhiyuan WanZhejiang University, Xin XiaMonash University, Ahmed E. HassanQueen's University, David LoSingapore Management University, Jianwei Yin, Xiaohu Yang
icse-2019-Technical-Papers11:10 - 11:30
Talk
Suraj YatishThe University of Adelaide, Jirayus JiarpakdeeMonash University, Patanamon ThongtanunamThe University of Melbourne, Chakkrit TantithamthavornMonash University, Australia
icse-2019-Technical-Papers11:30 - 11:50
Talk
George CabralUniversity of Birmingham, Leandro Minku , Emad ShihabConcordia University, Suhaib Mujahid
icse-2019-Journal-First-Paper11:50 - 12:00
Talk
Chakkrit TantithamthavornMonash University, Australia, Ahmed E. HassanQueen's University, Kenichi MatsumotoNara Institute of Science and Technology
Pre-print
icse-2019-Journal-First-Paper12:00 - 12:10
Talk
Kwabena E. BenninBlekinge Institute of Technology, SERL Sweden, Jacky Keung, Akito Monden
Authorizer link
icse-2019-New-Ideas-and-Emerging-Reults12:10 - 12:20
Talk
Cristina MonniUniversità della Svizzera Italiana, Mauro PezzeUniversità della Svizzera italiana (USI) (Switzerland) and Università degli Studi di Milano Bicocca (Italy)
Pre-print
icse-2019-Paper-Presentations12:20 - 12:30
Talk