“…Tomcat has been largely used for empirical software engineering studies [6,10,7,8,9,14,18,20]. For example, Okutan et al [11] built a Bayesian network among metrics and defectiveness, to measure which metrics were more important in terms of their effect on defectiveness and to explore the influential relationships among them. The authors used 9 datasets from the teraPromise data repository 9 , considering Tomcat among other systems, and showed that RFC, LOC, and LOCQ are more effective on defect proneness.…”