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https://issues.apache.org/jira/browse/MAHOUT-943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13184032#comment-13184032
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Sean Owen commented on MAHOUT-943:
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Or RunningAverageAndStdDev does this too
> Improbe the way to make the split point on DF.
> ----------------------------------------------
>
> Key: MAHOUT-943
> URL: https://issues.apache.org/jira/browse/MAHOUT-943
> Project: Mahout
> Issue Type: Improvement
> Components: Classification
> Reporter: Ikumasa Mukai
> Labels: DecisionForest
>
> The numericalSplit() on OptIgSplit adopts the way to regard the attribute
> value having the best IG as the split point.
> But I think this is a little too strict and think it is better on some
> situation to use the average value which is calced with the best IG value
> and the 2nd value.
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