title: How to do overlapping cluster analysis in Matlab or R?
body: <p>I have a binary matrix of size 20 by 300. I want to cluster the 20 variables into five or six groups. So far I used kmeans and hierarchical clustering algorithms in matlab with different distance metrics but both give me non-overlapping clusters. I see on my data that some of the variables should be located in more than one group. Does anyone know if there is a way to do overlapping clusters either in matlab ot R? Any help is greatly appreciated. 
  Thanks in advance!</p>