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[R] Hierarchical clustering with centroid method

Paolo Radaelli

2005-07-26


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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