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Posted to dev@mahout.apache.org by "Jeff Eastman (Commented) (JIRA)" <ji...@apache.org> on 2011/12/03 19:30:39 UTC

[jira] [Commented] (MAHOUT-825) Canopies grouping records outside t1

    [ https://issues.apache.org/jira/browse/MAHOUT-825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13162194#comment-13162194 ] 

Jeff Eastman commented on MAHOUT-825:
-------------------------------------

+1 I'm now inclined to agree
                
> Canopies grouping records outside t1
> ------------------------------------
>
>                 Key: MAHOUT-825
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-825
>             Project: Mahout
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 0.6
>         Environment: windows, linux
>            Reporter: Paritosh Ranjan
>            Assignee: Jeff Eastman
>              Labels: features, newbie, patch
>             Fix For: 0.6
>
>         Attachments: Clustering Remote Points - Two Big, Useless Clusters.txt, MAHOUT-825.patch, Not Clustering Remote Points - Two Meaningful Clusters.txt, canopy-clusterFilter-t1, canopy-outlier-elimination, canopy-outside-t1-points-patch-1, canopy-radius-based-outlier-elimination, canopy-strict-clustering-flag
>
>
> While finding closest canopy, there is no check to ensure that it returns canopies which are within distance t1 from the point. This results in incorrect result i.e. Points outside t1 are grouped in canopies.

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