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

Table 9

Results of the IT2MPE-DMFP validation index to Iris Flower dataset clustering using IT2FPCM and IT2FCM algorithm with = [1.5, 2] and = [1.5, 2.5] as parameters.

Index validation IT2MPE-DMFP
Dataset	Clusters	IT2FPCM			IT2FCM
		Defuzz	Lower	Upper	Defuzz	Lower	Upper
Iris	2	0.29224	0.30348	0.28101	0.29206	0.30341	0.28071
	3	0.27581	0.27769	0.27394	0.27186	0.27371	0.27001
	4	0.65772	0.70196	0.61348	0.78895	0.75105	0.82686
	5	0.65979	0.59070	0.72888	0.64700	0.57492	0.71908
	6	0.92039	0.79450	1.04628	1.66071	1.62370	1.69772
	7	1.51645	1.31241	1.72049	0.85814	0.89191	0.82436
	8	2.45753	2.32286	2.59220	1.41122	1.36998	1.45246
	9	2.25261	2.08606	2.41917	1.90568	1.78587	2.02548
	10	2.62804	2.40631	2.84977	2.60432	2.38812	2.82051