[jira] [Commented] (SPARK-4583) GradientBoostedTrees error logging should use loss being minimized

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-4583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14223950#comment-14223950 ] 

Apache Spark commented on SPARK-4583:
-------------------------------------

User 'jkbradley' has created a pull request for this issue:
https://github.com/apache/spark/pull/3439

> GradientBoostedTrees error logging should use loss being minimized
> ------------------------------------------------------------------
>
>                 Key: SPARK-4583
>                 URL: https://issues.apache.org/jira/browse/SPARK-4583
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>    Affects Versions: 1.2.0
>            Reporter: Joseph K. Bradley
>            Assignee: Joseph K. Bradley
>            Priority: Minor
>
> Currently, the LogLoss used by GradientBoostedTrees has 2 issues:
> * the gradient (and therefore loss) does not match that used by Friedman (1999)
> * the error computation uses 0/1 accuracy, not log loss



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