Detecting unknown malicious code by applying classification techniques on OpCode patterns

Security Informatics

Table 1 The top five settings with the highest mean accuracy over all the classifiers.

n-gram size	Representation	Feature selection	Top features	FPR	TPR	Accuracy	G-Mean
2	TF	DF	300	0.045	0.744	0.911	0.840
2	TFIDF	DF	300	0.045	0.744	0.911	0.840
2	TF	DF	100	0.053	0.754	0.907	0.845
2	TFIDF	DF	100	0.053	0.754	0.907	0.845
2	TF	DF	200	0.047	0.729	0.906	0.830