Table 1. IFS performance with RF and different top features.

Number of features	Sensitivity	Specificity	Accuracy	Matthew correlation coefficient
1	0.677	0.727	0.686	0.322
2	0.813	0.909	0.831	0.601
3	0.854	0.727	0.831	0.520
4	0.906	0.818	0.890	0.672
5	0.906	0.909	0.907	0.738
6	0.917	0.864	0.907	0.723
7	0.927	0.909	0.924	0.775
8	0.917	0.909	0.915	0.756
9	0.938	0.909	0.932	0.796
10	0.958	0.818	0.932	0.777
11	0.969	0.864	0.949	0.832
12	0.938	0.864	0.924	0.764
13	0.938	0.864	0.924	0.764
14	0.938	0.864	0.924	0.764
15	0.948	0.909	0.941	0.817