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https://issues.apache.org/jira/browse/SPARK-19066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15826702#comment-15826702
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Apache Spark commented on SPARK-19066:
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User 'wangmiao1981' has created a pull request for this issue:
https://github.com/apache/spark/pull/16623
> SparkR LDA doesn't set optimizer correctly
> ------------------------------------------
>
> Key: SPARK-19066
> URL: https://issues.apache.org/jira/browse/SPARK-19066
> Project: Spark
> Issue Type: Bug
> Components: SparkR
> Reporter: Miao Wang
> Assignee: Miao Wang
> Fix For: 2.2.0
>
>
> spark.lda pass the optimizer "em" or "online" to the backend. However,
> LDAWrapper doesn't set optimizer based on the value from R. Therefore, for
> optimizer "em", the `isDistributed` field is FALSE, which should be TRUE.
> In addition, the `summary` method should bring back the results related to
> `DistributedLDAModel`.
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