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Posted by C.Michelsen on April 13, 2000 at 01:58:12:
Milligan and Cooper (Psychometrika 1985) review several different stopping rules for determining the correct number of clusters in a data set. I am particularly interested in locating algorithms for, or precise definitions of how to calculate, the Calinski and Harabasz(1974) index, the Je(2)/Je(1) index (Duda and Hart 1973) and the C-index (Hubert and Levin 1976).
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