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Posted to dev@mahout.apache.org by "Deneche A. Hakim (Commented) (JIRA)" <ji...@apache.org> on 2012/01/05 18:28:41 UTC

[jira] [Commented] (MAHOUT-943) Improbe the way to make the split point on DF.

    [ https://issues.apache.org/jira/browse/MAHOUT-943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13180569#comment-13180569 ] 

Deneche A. Hakim commented on MAHOUT-943:
-----------------------------------------

You can inherit from IgSplit and provide your own implementation. But we'll need to be able to tell BuildForest which implementation to use
                
> 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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