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From David Hall <d...@cs.berkeley.edu>
Subject Re: extract p(doc|topic) from LDA
Date Mon, 07 Jun 2010 18:43:52 GMT
On Sun, Jun 6, 2010 at 5:13 AM, Avishay Livne1 <AVISHAYL@il.ibm.com> wrote:
>
> Hi,
>
> I'm trying to use LDA for a collaborative filtering task, where I need to
> predict the rating a user (document) will give to a movie (word).
> I ran LDA and constructed T topics, but I can only print the most frequent
> words (movies) per topic.
> Is it possible to extract p(documet|topic) or p(word|topic) from LDA's
> output? (document = new user, word = movie).

What does p(document|topic) mean? \prod_{word in document} p(word|topic) ?

-- David

>
> Best regards,
> Avishay
>
>

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