search for: principal_component_analysi

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2009 Jun 11
1
Cluster analysis, defining center seeds or number of clusters
...ntly, is there a way to find a priori the number of groups? I know this is not an easy problem. I have looked at principal components (princomp, prcomp) because there is a connection with cluster analysis. It is not obvious to me how to program that connection though. http://en.wikipedia.org/wiki/Principal_Component_Analysis http://ranger.uta.edu/~chqding/papers/Zha-Kmeans.pdf http://ranger.uta.edu/~chqding/papers/KmeansPCA1.pdf Thanks in advance, Alex van der Spek