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Data clustering using evidence accumulation

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2 Author(s)
Fred, A.L.N. ; Telecommun. Inst., Instituto Superior Tecnico, Lisbon, Portugal ; Jain, A.K.

We explore the idea of evidence accumulation for combining the results of multiple clusterings. Initially, n d-dimensional data is decomposed into a large number of compact clusters; the K-means algorithm performs this decomposition, with several clusterings obtained by N random initializations of the K-means. Taking the co-occurrences of pairs of patterns in the same cluster as votes for their association, the data partitions are mapped into a co-association matrix of patterns. This n×n matrix represents a new similarity measure between patterns. The final clusters are obtained by applying a MST-based clustering algorithm on this matrix. Results on both synthetic and real data show the ability of the method to identify arbitrary shaped clusters in multidimensional data.

Published in:

Pattern Recognition, 2002. Proceedings. 16th International Conference on  (Volume:4 )

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