Using Software Dependency to Bug Prediction

Table 4

𝐹-value: fixed classes, bugs, and bug severity.

	Classes			Bugs			Severity
	BC	outD	BCD	BC	outD	BCD	BC	outD	BCD
Top 50	0.2043	0.2920	0.2628	0.3760	0.5470	0.4786	0.2917	0.6667	0.4583
Top 100	0.2567	0.3102	0.3316	0.4072	0.4431	0.4551	0.3288	0.5069	0.3836
Top 150	0.2616	0.2954	0.2954	0.3594	0.3779	0.3687	0.2857	0.4184	0.2959
Top 200	0.2857	0.2857	0.2857	0.3071	0.3071	0.3521	0.2439	0.3740	0.2846
Top 50	0.1307	0.2111	0.2312	0.1946	0.4221	0.4322	0.1481	0.2613	0.2613
Top 100	0.2651	0.3534	0.3213	0.3489	0.6383	0.5957	0.2270	0.4865	0.4649
Top 125	0.3139	0.3358	0.3285	0.4385	0.5923	0.5846	0.3143	0.4381	0.4286

The bold value refers to the best F-value, identified by comparing three metrics (BC, outD, and BCD) at the top K, of predicting fixed classes, bugs, and bug severity, respectively.