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https://issues.apache.org/jira/browse/SPARK-6113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14392054#comment-14392054
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Joseph K. Bradley commented on SPARK-6113:
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I just noted that this is blocked by the 2 indexer JIRAs. (Really, it requires
at least one of them.) This is because we made a decision to add this API
directly to the spark.ml package, rather than creating another tree API within
the spark.mllib package. In the spark.ml package, we will require some way to
test categorical features and multiclass classification, which will require one
of the indexer JIRAs (to add category metadata).
> Stabilize DecisionTree and ensembles APIs
> -----------------------------------------
>
> Key: SPARK-6113
> URL: https://issues.apache.org/jira/browse/SPARK-6113
> Project: Spark
> Issue Type: Sub-task
> Components: MLlib, PySpark
> Affects Versions: 1.4.0
> Reporter: Joseph K. Bradley
> Assignee: Joseph K. Bradley
> Priority: Critical
>
> *Issue*: The APIs for DecisionTree and ensembles (RandomForests and
> GradientBoostedTrees) have been experimental for a long time. The API has
> become very convoluted because trees and ensembles have many, many variants,
> some of which we have added incrementally without a long-term design.
> *Proposal*: This JIRA is for discussing changes required to finalize the
> APIs. After we discuss, I will make a PR to update the APIs and make them
> non-Experimental. This will require making many breaking changes; see the
> design doc for details.
> [Design doc |
> https://docs.google.com/document/d/1rJ_DZinyDG3PkYkAKSsQlY0QgCeefn4hUv7GsPkzBP4]:
> This outlines current issues and the proposed API.
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