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

Table 22

Results of the IT2PE validation index to Cover type dataset clustering using IT2FPCM and IT2FCM algorithm with = [1.5, 2.5] and = [1.5, 2.5] as parameters.

Index of validation IT2PE
Dataset	Clusters	IT2FPCM			IT2FCM
		Defuzz	Lower	Upper	Defuzz	Lower	Upper
Cover type	2	0.35587	0.33093	0.38080	0.35587	0.33093	0.38081
	3	0.56607	0.47652	0.65563	0.56608	0.47652	0.65563
	4	0.73183	0.58434	0.87933	0.73183	0.58434	0.87933
	5	0.85155	0.64428	1.05882	0.85155	0.64428	1.05883
	6	0.97154	0.70936	1.23372	0.97152	0.70934	1.23370
	7	1.05830	0.75102	1.36559	1.05713	0.74991	1.36436
	8	1.14555	0.79324	1.49786	1.14611	0.79369	1.49853
	9	1.22450	0.83102	1.61797	1.22440	0.83113	1.61766