Mitra, SushmitaBanka, HaiderPedrycz, Witold2011-09-202011-09-202006IEEE Transactions on Systems Man, and Cybernetics, v.36, no.5, p.795-805http://hdl.handle.net/10263/2593enCluster validityCollaborative clusteringFuzzy membershipObjective function based clusteringRough setsArticle