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dc.contributor.authorJiang, Tian
dc.date.accessioned2013-08-30 15:17:54 (GMT)
dc.date.available2013-08-30 15:17:54 (GMT)
dc.date.issued2013-08-30T15:17:54Z
dc.date.submitted2013
dc.identifier.urihttp://hdl.handle.net/10012/7786
dc.description.abstractAcademia and industry expend much effort to predict software defects. Researchers proposed many defect prediction algorithms and metrics. While previous defect prediction techniques often take the author of the code into consideration, none of these techniques build a separate prediction model for each developer. Different developers have different coding styles, commit frequencies, and experience levels, which would result in different defect patterns. When the defects of different developers are combined, such differences are obscured, hurting the prediction performance. This thesis proposes two techniques to improve defect prediction performance: personalized defect prediction and confidence-based hybrid defect prediction. Personalized defect prediction builds a separate prediction model for each developer to predict software defects. Confidence-based hybrid defect prediction combines different models by picking the prediction from the model with the highest confidence. As a proof of concept, we apply the two techniques to classify defects at the file change level. We implement the state-of-the-art change classification as the baseline and compare with the personalized defect prediction approach. Confidence-based defect prediction combines these two models. We evaluate on six large and popular software projects written in C and Java—the Linux kernel, PostgreSQL, Xorg, Eclipse, Lucene and Jackrabbit.en
dc.language.isoenen
dc.publisherUniversity of Waterlooen
dc.subjectchange classificationen
dc.subjectdefect predictionen
dc.subjectmachine learningen
dc.subjectsoftware reliabilityen
dc.titlePersonalized Defect Predictionen
dc.typeMaster Thesisen
dc.comment.hiddenContains published material from ASE 2013. Their copyright form says "authors are permitted to re-use all or portions of the Work in other works"en
dc.pendingfalseen
dc.subject.programElectrical and Computer Engineeringen
uws-etd.degree.departmentElectrical and Computer Engineeringen
uws-etd.degreeMaster of Applied Scienceen
uws.typeOfResourceTexten
uws.peerReviewStatusUnrevieweden
uws.scholarLevelGraduateen


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