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Posted to issues@spark.apache.org by "Vladimir Feinberg (JIRA)" <ji...@apache.org> on 2016/07/25 20:53:21 UTC

[jira] [Created] (SPARK-16718) gbm-style treeboost

Vladimir Feinberg created SPARK-16718:
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             Summary: gbm-style treeboost
                 Key: SPARK-16718
                 URL: https://issues.apache.org/jira/browse/SPARK-16718
             Project: Spark
          Issue Type: Sub-task
            Reporter: Vladimir Feinberg


As an initial minimal change, we should provide TreeBoost as implemented in GBM for both L1 and L2 losses: by introducing a new "loss-based" impurity, tree leafs in GBTs can have loss-optimal predictions for their partition of the data.



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