Hybrid Fuzzy Clustering Method Based on FCM and Enhanced Logarithmical PSO (ELPSO)

Table 9

Standard deviation for validity index PBM(F) (best results are highlighted in bold).

Datasets	GA-FCM	FCM-SPSO	FCM-LPSO	FCM-EPSO	FCM-RPSO	FCM-ELPSO
Ecoli	0.0085	0.0088	0.0060	0.0072	0.0065	0.0053
Glass	0.2473	0.1993	0.2953	0.2056	0.3306	0.1647
Image segmentation	200.4316	196.6843	207.5596	198.1861	216.7850	168.7607
Page blocks classification	7.1675e + 03	5.8166e + 03	6.7870e + 03	6.3222e + 03	7.4694e + 03	2.8312e + 03
Spectf	7.0519	2.9708	7.7021	6.6620	6.5179	2.1903
Steel plates faults	5.8661e + 05	4.2121e + 05	6.4348e + 05	5.2614e + 05	6.2299e + 05	3.9786e + 05
Ultrasonic flowmeter diagnostics	306.4910	331.9834	232.4805	245.6173	290.7265	196.3196
Yeast	0.0133	0.0107	0.0116	0.0129	0.0134	0.0053