Pakhira, Malay KBandyopadhyay, SanghamitraMoulik, Ujjwal2012-11-162012-11-162004Pattern Recognition, v 37, p 487-501http://hdl.handle.net/10263/4848enClusteringExpectation maximization algorithmFuzzy c-means algorithmK-means algorithmUnsupervised classificationValidity indexValidity index for crisp and fuzzy clustersArticle