[jira] [Commented] (SPARK-2160) error of Decision tree algorithm in Spark MLlib

["Sean Owen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14033550#comment-14033550 ] 

Sean Owen commented on SPARK-2160:
----------------------------------

You already added this as https://issues.apache.org/jira/browse/SPARK-2152 right?

> 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"  



--
This message was sent by Atlassian JIRA
(v6.2#6252)