Using the gini coefficient for bug prediction in eclipse

Authors:
Emanuel Giger;Martin Pinzger;Harald Gall
Affiliations:
University of Zurich, Zurich, Switzerland;Delft University of Technology, Delft, Netherlands;University of Zurich, Zurich, Switzerland
Venue:
Proceedings of the 12th International Workshop on Principles of Software Evolution and the 7th annual ERCIM Workshop on Software Evolution
Year:
2011

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Abstract

The Gini coefficient is a prominent measure to quantify the inequality of a distribution. It is often used in the field of economy to describe how goods, e.g., wealth or farmland, are distributed among people. We use the Gini coefficient to measure code ownership by investigating how changes made to source code are distributed among the developer population. The results of our study with data from the Eclipse platform show that less bugs can be expected if a large share of all changes are accumulated, i.e., carried out, by relatively few developers.