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https://issues.apache.org/jira/browse/SPARK-10785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15184711#comment-15184711
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Nick Pentreath commented on SPARK-10785:
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Pending SPARK-13600, this would no longer be necessary, since we would be using
the DataFrame {{approxQuantile}} function.
> Scale QuantileDiscretizer using distributed binning
> ---------------------------------------------------
>
> Key: SPARK-10785
> URL: https://issues.apache.org/jira/browse/SPARK-10785
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Joseph K. Bradley
>
> [SPARK-10064] improves binning in decision trees by distributing the
> computation. QuantileDiscretizer should do the same.
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