Table 8.

Classification performance of feature reduction based on PCA.

Serial number	Accuracy (%)	Sensitivity (%)	Specificity (%)	10 × running time (s)
1	91.67	83.33	100	0.9970
2	96.74	93.48	100	0.4830
3	96.74	93.48	100	0.4880
4	98.91	100	97.83	0.4950
5	93.48	86.96	100	0.4950
6	96.74	100	93.48	0.5140
7	96.74	100	93.48	0.5120
8	94.57	89.13	100	0.4890
9	97.83	95.65	100	0.4990
10	95.65	93.48	97.83	0.5180
Mean	95.91	93.55	98.26	0.5490