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Posted to dev@mahout.apache.org by "Vasil Vasilev (JIRA)" <ji...@apache.org> on 2011/05/12 17:28:47 UTC

[jira] [Issue Comment Edited] (MAHOUT-684) Topics regularization for LDA

    [ https://issues.apache.org/jira/browse/MAHOUT-684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032458#comment-13032458 ] 

Vasil Vasilev edited comment on MAHOUT-684 at 5/12/11 3:28 PM:
---------------------------------------------------------------

Newer version, compliant with MAHOUT-682. Also the I/O footprint improved

      was (Author: vavasilev):
    Newer version, compiant with MAHOUT-682. Also the I/O footprint improved
  
> 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
>            Priority: Minor
>              Labels: LDA.
>         Attachments: 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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