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From "Ted Dunning (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAHOUT-1086) Mean Shift Test Now Produces 4 Clusters
Date Sat, 29 Sep 2012 23:32:07 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13466360#comment-13466360
] 

Ted Dunning commented on MAHOUT-1086:
-------------------------------------

I think that this is my issue.  According to git, it find that the first bad commit was svn@1379763


{code}
9929fddbc542d43f7978cb45980ae3e8855b2278 is the first bad commit
commit 9929fddbc542d43f7978cb45980ae3e8855b2278
Author: Ted Dunning <tdunning@apache.org>
Date:   Sat Sep 1 14:03:22 2012 +0000

    MAHOUT-1063 - Integer and real attributes are handled just as any numeric attribute.
    
    git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1379763 13f79535-47bb-0310-9956-ffa450edef68

:040000 040000 199b69ff766daded3774d0e8fa64cf59199e9af1 12e47b4f7f35512604c457c2dd18e40d8d0ae34a
M	integration
bisect run success
Teds-MacBook-Pro-2:mahout-2[(no branch)*]$ git bisect log
git bisect start
# bad: [fa30e5fcb8f2ed8002a6676a673494273f63e679] MAHOUT-1059 - Remove memory hungry test
git bisect bad fa30e5fcb8f2ed8002a6676a673494273f63e679
# good: [556737f074a0ad97595a6b584e99bd020c9d8b23] more getters for a factorization (minor
change)
git bisect good 556737f074a0ad97595a6b584e99bd020c9d8b23
# bad: [c91eba1ad197de6f61a010b880b6cfed671051d9] MAHOUT-1059 - Add generic vector test.
git bisect bad c91eba1ad197de6f61a010b880b6cfed671051d9
# bad: [ab514d84bfc4cb0c34b5a79d63d08df5f742dba0] MAHOUT-1063 - Add test case for ARFF integers
and reals.
git bisect bad ab514d84bfc4cb0c34b5a79d63d08df5f742dba0
# bad: [9929fddbc542d43f7978cb45980ae3e8855b2278] MAHOUT-1063 - Integer and real attributes
are handled just as any numeric attribute.
git bisect bad 9929fddbc542d43f7978cb45980ae3e8855b2278
Teds-MacBook-Pro-2:mahout-2[(no branch)*]$ 
{code}

I will look further.
                
> Mean Shift Test Now Produces 4 Clusters
> ---------------------------------------
>
>                 Key: MAHOUT-1086
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1086
>             Project: Mahout
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 0.7
>            Reporter: Jeff Eastman
>
> Something changed in Mahout around 9/6/12 that caused TestMeanShift.testCanopyEuclideanMRJobNoClustering
to return 4 clusters rather than 3. All of the other tests using the same data still return
3 clusters. No changes were made to any of the MeanShiftCanopy classes other than 1 formatting
change to the driver so I'm at a loss to the cause.

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