Table 4. Comparisons of the proposed method SCMCRYS with existing classifiers.

Classifiers	Type	Test Accuracy (%)	MCC	Sensiti vity	Specifi city
CRYSTALP2a	single	55.3	0.19	0.74	0.46
SVMCRYSa	single	56.3	0.21	0.75	0.47
SVM_POLYa	single	74.6	0.40	0.48	0.88
SVM_DPC	single	77.55	0.47	0.45	0.94
SCM (Dipeptide)	single	73.90	0.38	0.45	0.88
PPCpreda	ensemble	76.8	0.47	0.61	0.85
RFCRYSa	ensemble	80.0	0.53	0.51	0.95
SCMCRYS	ensemble	76.1	0.44	0.46	0.91

^aResults come from the work RFCRYS [14].