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https://issues.apache.org/jira/browse/SPARK-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng resolved SPARK-2160.
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Resolution: Duplicate
> error of Decision tree algorithm in Spark MLlib
> --------------------------------------------------
>
> Key: SPARK-2160
> URL: https://issues.apache.org/jira/browse/SPARK-2160
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Affects Versions: 1.0.0
> Reporter: caoli
> Labels: patch
> Fix For: 1.1.0
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> the error of comput rightNodeAgg about Decision tree algorithm in Spark
> MLlib , in the function extractLeftRightNodeAggregates() ,when compute
> rightNodeAgg used bindata index is error. in the DecisionTree.scala file
> about Line980:
> rightNodeAgg(featureIndex)(2 * (numBins - 2 - splitIndex)) =
> binData(shift + (2 * (numBins - 2 - splitIndex))) +
> rightNodeAgg(featureIndex)(2 * (numBins - 1 - splitIndex))
>
> the binData(shift + (2 * (numBins - 2 - splitIndex))) index compute is
> error, so the result of rightNodeAgg include repeated data about "bins"
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