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https://issues.apache.org/jira/browse/SPARK-5957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14486432#comment-14486432
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Apache Spark commented on SPARK-5957:
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User 'mengxr' has created a pull request for this issue:
https://github.com/apache/spark/pull/5431
> Better handling of default parameter values.
> --------------------------------------------
>
> Key: SPARK-5957
> URL: https://issues.apache.org/jira/browse/SPARK-5957
> Project: Spark
> Issue Type: Sub-task
> Components: ML
> Affects Versions: 1.3.0
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
>
> We store the default value of a parameter in the Param instance. In many
> cases, the default value depends on the algorithm and other parameters
> defined in the same algorithm. We need to think a better approach to handle
> default parameter values.
> The design doc was posted in the parent JIRA:
> https://issues.apache.org/jira/browse/SPARK-5874
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