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Clustering Overview Algorithm Begin with all sequences in one cluster While splitting some cluster improves the objective function: { Split each cluster in two so that the objective function has the greatest possible improvement at that step Reassign individual sequences into the cluster while doing so improves the objective function } The Objective Function I( X i ; X j |C ) i

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Clustering Methods K- means. K-means Algorithm Assume that K=3 and initially the points are assigned to clusters as follows. C 1 ={x 1,x 2,x 3 }, C 2.

Clustering Methods K- means. K-means Algorithm Assume that K=3 and initially the points are assigned to clusters as follows. C 1 ={x 1,x 2,x 3 }, C 2.

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