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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/08/08 22:15:20 UTC
[jira] [Assigned] (SPARK-16718) gbm-style treeboost
[ https://issues.apache.org/jira/browse/SPARK-16718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-16718:
------------------------------------
Assignee: Apache Spark (was: Vladimir Feinberg)
> gbm-style treeboost
> -------------------
>
> Key: SPARK-16718
> URL: https://issues.apache.org/jira/browse/SPARK-16718
> Project: Spark
> Issue Type: Sub-task
> Components: MLlib
> Reporter: Vladimir Feinberg
> Assignee: Apache Spark
>
> .As an initial minimal change, we should provide TreeBoost as implemented in GBM for L1, L2, and logistic losses: by introducing a new "loss-based" impurity, tree leafs in GBTs can have loss-optimal predictions for their partition of the data.
> Commit should have evidence of accuracy improvment
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