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From "Alex Ott (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAHOUT-723) Incorrect handling of NUM_CLUSTERS_OPTION in FuzzyKMeansDriver class
Date Sun, 05 Jun 2011 14:10:47 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alex Ott updated MAHOUT-723:
----------------------------

    Status: Open  (was: Patch Available)

> Incorrect handling of NUM_CLUSTERS_OPTION in FuzzyKMeansDriver class
> --------------------------------------------------------------------
>
>                 Key: MAHOUT-723
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-723
>             Project: Mahout
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 0.5, 0.6
>         Environment: Mac OS X 10.6.7, Mahout 0.5/trunk
>            Reporter: Alex Ott
>             Fix For: 0.6
>
>         Attachments: 0001-fix-for-MAHOUT-723-bug-checked-with-0.5-version.patch
>
>
> the NUM_CLUSTERS_OPTION isn't handled correctly in the FuzzyKMeansDriver, so it leads
to NPE when running fuzzy k-means clustering through command-line tool with following command:
> bin/mahout fkmeans -i reuters-vectors/tfidf-vectors/ -c reuters-fkmeans-centroids -o
reuters-fkmeans-clusters -dm org.apache.mahout.common.distance.SquaredEuclideanDistanceMeasure
-x 10 -cl -k 21 -cd 1.0 -m 3 -ow

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