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https://issues.apache.org/jira/browse/SPARK-14681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16389382#comment-16389382
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Apache Spark commented on SPARK-14681:
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User 'WeichenXu123' has created a pull request for this issue:
https://github.com/apache/spark/pull/20758

> Provide label/impurity stats for spark.ml decision tree nodes
> -------------------------------------------------------------
>
>                 Key: SPARK-14681
>                 URL: https://issues.apache.org/jira/browse/SPARK-14681
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>            Reporter: Joseph K. Bradley
>            Priority: Major
>
> Currently, spark.ml decision trees provide all node info except for the 
> aggregated stats about labels and impurities.  This task is to provide those 
> publicly.  We need to choose a good API for it, so we should discuss the 
> design on this issue before implementing it.



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