HGVul: A Code Vulnerability Detection Method Based on Heterogeneous Source-Level Intermediate Representation

Table 5

Performance of different IR. Performance of different IR on Big-Vul (%).

IR	Acc		Recall	F1	FNR	FPR
AST	97.2	80.5	67.2	73.3	32.8	1
AST+	97.6	80.3	77	78.6	23	1.1
CFG	97.4	82.7	69.5	75.5	30.5	0.9
PDG	96.5	72	62.9	67.1	37.1	1.5
CPG	98.1	84	81.3	82.6	18.7	0.9
CPG+	98.2	89	78.4	83.4	21.6	0.6