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Posted to issues@hivemall.apache.org by "Makoto Yui (JIRA)" <ji...@apache.org> on 2019/03/13 07:57:00 UTC

[jira] [Closed] (HIVEMALL-243) Fix nominal variable handling in DecisionTree and RegressionTree

     [ https://issues.apache.org/jira/browse/HIVEMALL-243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Makoto Yui closed HIVEMALL-243.
-------------------------------
    Resolution: Fixed

> Fix nominal variable handling in DecisionTree and RegressionTree
> ----------------------------------------------------------------
>
>                 Key: HIVEMALL-243
>                 URL: https://issues.apache.org/jira/browse/HIVEMALL-243
>             Project: Hivemall
>          Issue Type: Task
>    Affects Versions: 0.5.2
>            Reporter: Makoto Yui
>            Assignee: Makoto Yui
>            Priority: Minor
>             Fix For: 0.6.0
>
>
> For NOMINAL variable, the maximum attribute index 'm' is used for computing splits.
> This cause performance issues for sparse nominal variables. So, revise this handling for a better performance.
> https://github.com/apache/incubator-hivemall/blob/master/core/src/main/java/hivemall/smile/classification/DecisionTree.java#L703



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