[R] Within and Between matrix

cgenolin at u-paris10.fr cgenolin at u-paris10.fr
Fri Dec 21 12:14:52 CET 2007

Hi the list...

I am working on cluster analysis, more precisely on Calinski and 
Harabasz criterion
( C(g)=Trace(between)/Trace(Within)*(n-g)/(g-1)) )
Is there a package for calculating within and between matrix?
Morever, when we are using matrix with missing value, how do they 
handle it? On a more theorical point of view, how shall we do? 
Imputation will probably underestimate it, isn't it ?


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