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https://issues.apache.org/jira/browse/SPARK-16718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Feinberg updated SPARK-16718:
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Description:
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.
Commit should have evidence of accuracy improvment
was: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.
> 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
>
> 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.
> Commit should have evidence of accuracy improvment
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