Predicting* Upgrade* Project* Defects* Based* on Enhancement* Requirements* An Empirical* Study*OKLei HeJuan Li 0001Qing Wang 0001Ye YangPredicting Upgrade Project Defects Based on Enhancement Requirements: An Empirical Study.ICSP268-2792009Conference and Workshop Papersclosedconf/ispw/HeLWY0910.1007/978-3-642-01680-6_25https://doi.org/10.1007/978-3-642-01680-6_25https://dblp.org/rec/conf/ispw/HeLWY09URL#5177248