Maintenance work on the ZORA databases is scheduled for Wednesday 22 May 2019 from 20:00-22:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Bird, C; Bachmann, A; Aune, E; Duffy, J; Bernstein, A; Filkov, V; Devanbu, P (2009). Fair and balanced? Bias in bug-fix datasets. In: ESEC/FSE '09: Proceedings of the 7th joint meeting of the European software engineering conference and the ACM SIGSOFT symposium on The foundations of software engineering on European software engineering conference and foundations of software engineering, Amsterdam, The Netherlands, August 2009 - August 2009, 121-130.