[R] Hierarchical clustering with centroid method

From: Paolo Radaelli <paolo.radaelli_at_unimib.it>
Date: Tue 26 Jul 2005 - 18:06:40 EST

Dear everybody!
In the function hclust, at each stage distances between clusters are recomputed by the Lance-Williams dissimilarity update formula according to the particular clustering method being used. Using "centroid" method, Lance-Williams recurrence formula works properly only for euclidean distance. How is it possible to use properly centroid method with manhattan distance ? Thanks

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