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https://issues.apache.org/jira/browse/SPARK-8536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14619706#comment-14619706
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Feynman Liang commented on SPARK-8536:
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I am working on adding asymmetric priors to OnlineLDA
> Generalize LDA to asymmetric priors
> -----------------------------------
>
> Key: SPARK-8536
> URL: https://issues.apache.org/jira/browse/SPARK-8536
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Joseph K. Bradley
> Original Estimate: 216h
> Remaining Estimate: 216h
>
> Several users have requested LDA using asymmetric priors, including learning
> those hyperparameters. We should add this functionality.
> Note that it could be added to EM, online LDA, or both. I suggest adding it
> to online LDA initially, followed by EM in a separate PR.
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