Table 4.

The accuracy rate of classification by K-Means in four datasets.

Datasets	OF29	PCA	FA	LPP	SR
D_MIX	0.9882	0.9881	0.9457	0.9893	0.9987
D_IRF	0.9678	0.9676	0.9331	0.9793	0.9876
D_ORF	0.9716	0.9715	0.9536	0.9782	0.9829
D_BF	0.9194	0.9191	0.9085	0.9324	0.9571