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https://issues.apache.org/jira/browse/MAHOUT-684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jake Mannix resolved MAHOUT-684.
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Resolution: Won't Fix
This patch applies to the original LDA we had in Mahout 0.5 or so, and doesn't
work with the CVB0 we currently have. We could certainly reopen this bug again
later if someone figured out how to apply this idea to CVB0, but for now let's
close this out.
> 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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