title: Which is the best document clustering open-source package?
body: <p>Which open-source package is the best for clustering a large corpus of documents? It should either decide the number of clusters by itself or it can also accept that as a parameter.</p>
  
  <p>We have a large corpus of documents that don't really revolve around a particular topic - they are documents produced by sales and management people on various projects and clients in the organisation. I know that having such a spread corpus will degrade the performance, but we are trying to live with the best that we can get. Now, what is the best we can get :-)</p>