4Pawlak Z. Rough sets. International Journal of Information and Computer Sciences, 1982,11 : 145-172
5Lingras P, West C. Interval set clustering of web users with rou - gh k-means. Journal of Intelligent Information Systems, 2004,23 (1):5-1643
6Wang Ruizhi, Miao Duoqian, Li Gang, et al. Rough Overlapping Biclustering of Gene Expression Data//Proceedings of the 7th IEEE International Conference on Bioinformatics and Bioengi- neering. 2007:828-834
7Peters G. Some refinements of rough k-means clustering. Pattern Recognition, 2006,39 (8) : 1481-1491
8Mitra S. An evolutionary rough partitive clustering. Pattern Recognition Letters, 2004,25 (12) : 1429-1449
9Peters G, Lampart M. A Partitive Rough Clustering Algorithm. Rough Sets and Current Trends in Computing,2006,4259(1):658
10Davies D, Bouldin D. A Cluster Separation Measure. IEEE Trans, Pattern Anal, 1979,1 (2) : 224-227
