From: gabhan@pececillo.com   
      
   salemkern3@yahoo.com (Salemkern) wrote in message news:...   
   > I have list of people, each of whom has picked 20   
   > musical groups as their favorites. I would like   
   > to find clusters among the musical groups: for example,   
   > if people who enjoy group A also enjoy group B, but don't   
   > enjoy group C, then A and B should be clustered together   
   > and C should be in a different cluster.   
   >   
   > I seem to remember some algorithm that would perform this   
   > clustering (collaborative filtering, naive bayes?).   
   >   
   > What algorithm am I looking for?   
   >   
   > Thanks,   
   > Salem   
   >   
      
   Salem,   
      
   There are quite a few different algorithms you could use here - a lot   
   of people like k-means. We've developed an Excel addin that uses our   
   own general purpose pattern discovery algorithm and it may be suitable   
   for you. If you're interested in a commercial application, you can   
   download a free trial version at http://www.pececillo.com .   
      
   I can provide more details by mail if you prefer.   
      
   HTH   
      
   Gabhan Berry   
   AI Prediction and Forecasting in Excel   
   http://www.pececillo.com   
      
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