In this paper we introduce clustering method at Data Mining.Clustering has been studied very deeply.In the field of Data Mining,clustering is facing the new situation.We summarize the major clustering methods and introduce four kinds of clustering method that have been used broadly in Data Mitring.Finally we draw a conclusion that the partitional clustering method based on distance in data mining is a typical two phase iteration process:1)appoint cluster;2)update the center of cluster.
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