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https://issues.apache.org/jira/browse/SPARK-4210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-4210.
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    Resolution: Won't Fix

> Add Extra-Trees algorithm to MLlib
> ----------------------------------
>
>                 Key: SPARK-4210
>                 URL: https://issues.apache.org/jira/browse/SPARK-4210
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib
>            Reporter: Vincent Botta
>
> This task will add Extra-Trees support to Spark MLlib. The implementation 
> could be inspired from the current Random Forest algorithm. This algorithm is 
> expected to be particularly suited as sorting of attributes is not required 
> as opposed to to the original Random Forest approach (with similar and/or 
> better predictive power). 
> The tasks involves:
> - Code implementation
> - Unit tests
> - Functional tests
> - Performance tests
> - Documentation



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