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From Sebastian Schelter <>
Subject Moving a twitter conversation to the mailing list
Date Mon, 08 Nov 2010 13:01:17 GMT
I'm moving a twitter conversation to the mailing list so that it doesn't 
vanish in the short-lived microblogging sphere.

To summarize, @alansaid is looking for an implementation of the 
EM-algorithm as described here: 
I could only point him to an unsuccessful implementation of PLSI tried 
at While this one 
worked for tiny examples, it clearly didn't scale and it had some parts 
of the algorithm wrong IMHO. @sbourke tweeted about using it besides 
scalability issues but I would clearly discourage anyone from doing this.

Nevertheless if Alan manages to make this work and scale I think it 
would make a very nice contribution to Mahout. I guess we'd be willing 
to help, so Alan, if you need support, just ask on dev@. There's also a 
mahout hackathon planned in Berlin, maybe that would be a good 
opportunity work collaboratively on that implementation.


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