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This research did not, however, distinguish among faults according to the severity of impact. It would be valuable to know how object-oriented design metrics and class fault-proneness are related when fault severity is taken into account. In this paper, we use logistic regression and machine learning methods to empirically investigate the usefulness of object-oriented design metrics, specifically, a subset of the Chidamber and Kemerer suite, in predicting fault-proneness when taking fault severity into account. Our results, based on a public domain NASA data set, indicate that 1) most of these design metrics are statistically related to fault-proneness of classes across fault severity, and 2) the prediction capabilities of the investigated metrics greatly depend on the severity of faults. More specifically, these design metrics are able to predict low severity faults in fault-prone classes better than high severity faults in fault-prone classes."}}]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Object-oriented, faults, fault-proneness, metrics, prediction, cross validation"}}]},{"typeName":"publication","multiple":true,"typeClass":"compound","value":[{"publicationCitation":{"typeName":"publicationCitation","multiple":false,"typeClass":"primitive","value":"Yuming Zhou, Hareton Leung: Empirical Analysis of Object-Oriented Design Metrics for Predicting High and Low Severity Faults. IEEE Trans. Software Eng. 32(10): 771-789 (2006)"}}]},{"typeName":"producer","multiple":true,"typeClass":"compound","value":[{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"Yuming Zhou"}}]},{"typeName":"productionDate","multiple":false,"typeClass":"primitive","value":"2005"},{"typeName":"distributor","multiple":true,"typeClass":"compound","value":[{"distributorName":{"typeName":"distributorName","multiple":false,"typeClass":"primitive","value":"Yuming Zhou"}}]},{"typeName":"distributionDate","multiple":false,"typeClass":"primitive","value":"2008-12-18"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2008-12-18"},{"typeName":"dateOfCollection","multiple":true,"typeClass":"compound","value":[{"dateOfCollectionStart":{"typeName":"dateOfCollectionStart","multiple":false,"typeClass":"primitive","value":"2005"},"dateOfCollectionEnd":{"typeName":"dateOfCollectionEnd","multiple":false,"typeClass":"primitive","value":"2005"}}]},{"typeName":"kindOfData","multiple":true,"typeClass":"primitive","value":["Software metrics data"]}]}},"files":[{"description":"The pre-processed KC1 data set by Yuming Zhou and Hareton Leung","label":"(only source bug)KC1.csv","restricted":false,"version":1,"datasetVersionId":66866,"categories":["2. 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