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Does anybody know if any package calculates the cubic clustering criterion (CCC) index in R to aid the selection of optimal number of clusters?

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  • $\begingroup$ Not exactly what you are looking for but the command cluster.stats from the R package fpc might be helpful. $\endgroup$ – user10525 May 24 '12 at 23:43
  • $\begingroup$ @Procrastinator Please, make this an answer; this sounds like a good advice, according to the author of the fpc package on R-help. I also gave some pointers on related threads. $\endgroup$ – chl May 26 '12 at 10:29
  • $\begingroup$ @chl Thanks for your comment. I have to admit that I do not know the area enough to make a defensible answer. I based my comment on the link you posted, the description on the manual and a quick search. $\endgroup$ – user10525 May 26 '12 at 10:33
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    $\begingroup$ This question appears to be off-topic because it is about finding an R package. $\endgroup$ – gung - Reinstate Monica Jan 25 '14 at 21:09
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It is included in NbClust and to be used via the option index = "ccc", e. g.

I_ccc <- NbClust(X, distance="euclidean", min.nc=2, max.nc=8, method = "complete",
        index = "ccc")
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