An Extension of the Fuzzy Possibilistic Clustering Algorithm Using Type-2 Fuzzy Logic Techniques

Table 13

IT2MPE-DMFP validation index results to Ionosphere dataset clustering using IT2FPCM and IT2FCM algorithm with = [1.5, 2.5] and = [1.5, 2.5] as parameters.

Index of validation IT2MPEDFP
Dataset	Clusters	IT2FPCM			IT2FCM
		Defuzz	Lower	Upper	Defuzz	Lower	Upper
Ionosphere	2	0.37490	0.38189	0.36792	0.37872	0.38264	0.37479
	3	0.67283	0.57794	0.76772	0.67487	0.57848	0.77126
	4	0.83519	0.69115	0.97923	0.83839	0.69166	0.98511
	5	1.01579	0.80954	1.22204	1.01694	0.80933	1.22456
	6	1.17398	0.89175	1.45622	1.17490	0.89191	1.45789
	7	1.31217	0.95649	1.66785	1.31246	0.95366	1.67126
	8	1.47017	1.03109	1.90924	1.46777	1.02669	1.90885
	9	1.64906	1.09276	2.20535	1.64527	1.08737	2.20317
	10	1.79078	1.15390	2.42766	1.78653	1.14450	2.42856