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https://issues.apache.org/jira/browse/SPARK-9440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14646812#comment-14646812
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Feynman Liang commented on SPARK-9440:
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PR at https://github.com/apache/spark/pull/7757
> LocalLDAModel should save docConcentration, topicConcentration, and gammaShap
> -----------------------------------------------------------------------------
>
> Key: SPARK-9440
> URL: https://issues.apache.org/jira/browse/SPARK-9440
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Reporter: Feynman Liang
> Priority: Critical
>
> LocalLDAModel needs to save these parameters in order for {{logPerplexity}}
> and {{bound}} (see SPARK-6793) to work correctly.
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