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Posted to issues@spark.apache.org by "Manish Amde (JIRA)" <ji...@apache.org> on 2014/06/19 23:47:26 UTC

[jira] [Closed] (SPARK-1544) Add support for deep decision trees.

     [ https://issues.apache.org/jira/browse/SPARK-1544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manish Amde closed SPARK-1544.
------------------------------


The PR has been accepted.

> Add support for deep decision trees.
> ------------------------------------
>
>                 Key: SPARK-1544
>                 URL: https://issues.apache.org/jira/browse/SPARK-1544
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>    Affects Versions: 1.0.0
>            Reporter: Manish Amde
>            Assignee: Manish Amde
>             Fix For: 1.0.0
>
>
> The current tree implementation stores an Array[Double] of size O(#features \ #splits * 2^maxDepth)* in memory for aggregating histograms over partitions. The current implementation might not scale to very deep trees since the memory requirement grows exponentially with tree depth. 
> This task enables construction of arbitrary deep trees.



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