Abstract
With the increasing number of bug reports coming into the open bug repository, it is impossible to triage bug reports manually by software managers. This paper proposes a novel approach called En-LDA (Entropy optimized Latent Dirichlet Allocation (LDA)) for automatic bug report assignment. Specifically, we propose entropy to optimize the number of topics of the LDA model and further use the entropy optimized LDA to capture the expertise and interest of developers in bug resolution. A developer’s interest in a topic is modeled by the number of the developer’s comments on bug reports of the topic divided by the number of all the developer’s comments. A developer’s expertise in a topic is modeled by the number of the developer’s comments on bug reports of the topic divided by the number of all developers’ comments on the topic. Given a new bug report, En-LDA recommends a ranked list of developers who are potentially adequate to resolve the new bug. Experiments on Eclipse JDT and Mozilla Firefox projects show that En-LDA can achieve high recall up to 84% and 58%, and precision up to 28% and 41%, respectively, which indicates promising aspects of the proposed approach.
Highlights
One of the most compelling aspects of OSS (Open Source Software) is that they are developed predominantly based on voluntary contribution from geographically-distributed software developers without rigorously-controlled planning and management as that found in proprietary software development [1]
This paper proposes a novel approach called En-LDA to automatic bug report assignment by using entropy and the LDA model
The entropy measure is used to optimize the number of topics and the LDA model is used to capture the expertise and interest of developers on bug reports
Summary
One of the most compelling aspects of OSS (Open Source Software) is that they are developed predominantly based on voluntary contribution from geographically-distributed software developers without rigorously-controlled planning and management as that found in proprietary software development [1]. Open bug repository, which is often called an issue tracking system, is widely adopted for software projects to support software development. Open source software projects adopt open bug repositories to support its development and maintenance in managing bugs. Geographically-distributed software developers and users report bugs of the software by submitting. If the message is a sequence as {1, 0, 0, 1, 0, 1, 1, 1, 1, 1}, the entropy of the message should be − 10 log2 10 − 10. The smaller the entropy is, the better is LDA to model the historical bug reports
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