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Posted to issues@spark.apache.org by "Xiangrui Meng (JIRA)" <ji...@apache.org> on 2015/01/16 20:10:34 UTC

[jira] [Resolved] (SPARK-3726) RandomForest: Support for bootstrap options

     [ https://issues.apache.org/jira/browse/SPARK-3726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiangrui Meng resolved SPARK-3726.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.2.0
         Assignee: Manish Amde  (was: Manoj Kumar)

Implemented in PR https://github.com/apache/spark/pull/2607

> RandomForest: Support for bootstrap options
> -------------------------------------------
>
>                 Key: SPARK-3726
>                 URL: https://issues.apache.org/jira/browse/SPARK-3726
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>            Reporter: Joseph K. Bradley
>            Assignee: Manish Amde
>            Priority: Minor
>             Fix For: 1.2.0
>
>
> RandomForest uses BaggedPoint to simulate bootstrapped samples of the data.  The expected size of each sample is the same as the original data (sampling rate = 1.0), and sampling is done with replacement.  Adding support for other sampling rates and for sampling without replacement would be useful.



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