Table 3.

Confusion matrixes for feature extraction methods.

FE method	Classification results without PCA				Classification results with PCA
	TP	FP	FN	TN	TP	FP	FN	TN
SSF	90	22	26	82	90	22	26	82
SBF	105	17	11	87	109	12	7	92
GTF	101	19	15	85	110	11	6	93
TEF	109	15	7	89	111	11	5	93
All FE methods (combined)	111	12	5	92	113	6	3	98