Research Article

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

Table 14

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

Index of validation IT2PE
DatasetClustersIT2FPCMIT2FCM
DefuzzLowerUpperDefuzzLowerUpper

Ionosphere20.462460.463540.461380.466290.464780.46780
30.804240.753280.855200.806220.752620.85982
41.018930.927191.110671.020470.925531.11541
51.208771.070921.346631.208021.067791.34826
61.374261.200161.548361.370651.195221.54607
71.520651.314041.727271.513811.307171.72044
81.656581.416181.896991.645161.406901.88342
91.774731.508792.040661.758031.496122.01995
101.876741.586792.166701.855951.571392.14051