Table 2.

Results of classification by the different number of the features.

Method	N = 3	N = 4	N = 5	N = 6	N = 7	N = 8	N = 9	N = 10
Pearson Correlation
Accuracy (%)	85.77	89.68	89.74	88.91	87.31	87.37	85.76	88.89
NOF	108	83	84	233	111	119	101	106
Partial Correlation
Accuracy (%)	80.13	77.82	80.06	79.29	80.71	84.87	81.60	80.83
NOF	896	829	1,489	1,150	971	2,488	1,467	1,531
Distance Correlation
Accuracy (%)	85.06	89.03	93.01	89.87	86.60	88.91	89.80	87.43
NOF	60	91	81	96	107	245	112	412

NOF, number of features.