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From "Jeff Eastman (Assigned) (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (MAHOUT-825) Canopies grouping records outside t1
Date Sat, 03 Dec 2011 18:28:40 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-825?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jeff Eastman reassigned MAHOUT-825:
-----------------------------------

    Assignee: Jeff Eastman
    
> 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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