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https://issues.apache.org/jira/browse/SPARK-23824?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joseph K. Bradley resolved SPARK-23824.
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Resolution: Duplicate
> Make inpurityStats publicly accessible in ml.tree.Node
> ------------------------------------------------------
>
> Key: SPARK-23824
> URL: https://issues.apache.org/jira/browse/SPARK-23824
> Project: Spark
> Issue Type: Wish
> Components: ML
> Affects Versions: 2.1.1
> Reporter: Barry Becker
> Priority: Minor
>
> This is minor, but it is also a very easy fix.
> I would like to visualize the structure of a decision tree model, but
> currently the only means of obtaining the label distribution data at each
> node of the tree is hidden within each ml.tree.Node inside the impurityStats.
> I'm pretty sure that the fix for this is as easy as removing the private[ml]
> qualifier from occurrences of
> private[ml] def impurityStats: ImpurityCalculator
> and
> override private[ml] val impurityStats: ImpurityCalculator
>
> As a workaround, I've put my class that needs access into a
> org.apache.spark.ml.tree package in my own repository, but I would really
> like to not have to do that.
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