The pre-processing techniques were applied in the bug prediction datasets published in http://bug.inf.usi.ch/download.php by D'Ambros et al to produce a new version of these datasets that are suitable for software maintainability prediction. The independent variables are CK and OO metrics and the dependent variables is CHANGE metric.

{"references": ["An Extensive Comparison of Bug Prediction Approaches Marco D'Ambros, Michele Lanza, Romain Robbes In Proceedings of MSR 2010 (7th IEEE Working Conference on Mining Software Repositories), pp. 31 - 41. IEEE CS Press, 2010."]}