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https://issues.apache.org/jira/browse/SPARK-5563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14308584#comment-14308584
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Apache Spark commented on SPARK-5563:
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User 'hhbyyh' has created a pull request for this issue:
https://github.com/apache/spark/pull/4419
> LDA with online variational inference
> -------------------------------------
>
> Key: SPARK-5563
> URL: https://issues.apache.org/jira/browse/SPARK-5563
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Affects Versions: 1.3.0
> Reporter: Joseph K. Bradley
>
> Latent Dirichlet Allocation (LDA) parameters can be inferred using online
> variational inference, as in Hoffman, Blei and Bach. “Online Learning for
> Latent Dirichlet Allocation.” NIPS, 2010. This algorithm should be very
> efficient and should be able to handle much larger datasets than batch
> algorithms for LDA.
> This algorithm will also be important for supporting Streaming versions of
> LDA.
> The implementation will ideally use the same API as the existing LDA but use
> a different underlying optimizer.
> This will require hooking in to the existing mllib.optimization frameworks.
> This will require some discussion about whether batch versions of online
> variational inference should be supported, as well as what variational
> approximation should be used now or in the future.
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