[jira] [Updated] (MAHOUT-684) Topics regularization for LDA

["Robin Anil (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robin Anil updated MAHOUT-684:
------------------------------

    Fix Version/s: 0.8
         Assignee: Jake Mannix

Jake, please take a look at this one commit/close as necessary
                
> Topics regularization for LDA
> -----------------------------
>
>                 Key: MAHOUT-684
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-684
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Clustering
>            Reporter: Vasil Vasilev
>            Assignee: Jake Mannix
>            Priority: Minor
>              Labels: LDA.
>             Fix For: 0.8
>
>         Attachments: MAHOUT-684.patch, MAHOUT-684.patch, MAHOUT-684.patch
>
>
> Implementation provided for the alpha parameters estimation as described in the paper of Blei, Ng and Jordan (http://www.cs.princeton.edu/~blei/papers/BleiNgJordan2003.pdf).
> Remark: there is a mistake in the last formula in A.4.2 (the signs are wrong). The correct version is described here: http://www.cs.cmu.edu/~jch1/research/dirichlet/dirichlet.pdf (page 6).

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