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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (SPARK-12381) Copy public decision tree helper classes from spark.mllib to spark.ml and make private
Date Mon, 08 Aug 2016 20:55:20 GMT

     [ https://issues.apache.org/jira/browse/SPARK-12381?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen updated SPARK-12381:
------------------------------
    Comment: was deleted

(was: I will be out of the office until Monday 15 August. I will not have regular access
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> Copy public decision tree helper classes from spark.mllib to spark.ml and make private
> --------------------------------------------------------------------------------------
>
>                 Key: SPARK-12381
>                 URL: https://issues.apache.org/jira/browse/SPARK-12381
>             Project: Spark
>          Issue Type: Sub-task
>          Components: ML, MLlib
>            Reporter: Seth Hendrickson
>
> The helper classes for decision trees and decision tree ensembles (e.g. Impurity, InformationGainStats,
ImpurityStats, DTStatsAggregator, etc...) currently reside in spark.mllib, but as the algorithm
implementations are moved to spark.ml, so should these helper classes.
> We should take this opportunity to make some of those helper classes private when possible
(especially if they are only needed during training) and maybe change the APIs (especially
if we can eliminate duplicate data stored in the final model).



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