Fig. 2From: Optimization of fuzzy c-means (FCM) clustering in cytology image segmentation using the gray wolf algorithmValidation indexes for comparing FCM and FCMGWO. a Calinski Harabasz index (CH) b Davies Bouldin index (DB) c Partition entropy index (Vpe) d Partition coefficient index (Vpc). The FCM and FCMGWO methods have a significant difference with respect to the Vpc and Vpe indices. However, there is no significant difference between the performances of the two clustering methods with respect to the Calinski-Harabasz and Davies-Bouldin indicesBack to article page