"clustering silhouette coefficient"

pep

Hi,
If this exists in RapidMiner, can anyone pls point me to the operator that would evaluate the clustering silhouette
as defined by  Peter J. Rousseeuw (1987). "Silhouettes: a Graphical Aid to the Interpretation and Validation of Cluster Analysis". A brief presentation of this clustering goodness coefficient is given at http://en.wikipedia.org/wiki/Silhouette_%28clustering%29 . Thank you.

Andrew2

Hello

For fun, I made this

http://rapidminernotes.blogspot.com/2011/06/counting-clusters-part-r.html

regards

Andrew