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https://issues.apache.org/jira/browse/MAHOUT-979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270970#comment-13270970
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Hudson commented on MAHOUT-979:
-------------------------------

Integrated in Mahout-Quality #1467 (See 
[https://builds.apache.org/job/Mahout-Quality/1467/])
    MAHOUT-979 cleanup: removing unused imports (Revision 1335742)
MAHOUT-979 RowSimilarityJob should be able to infer the number of columns from 
the input matrix if not specified (Revision 1335732)

     Result = SUCCESS
ssc : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1335742
Files : 
* /mahout/trunk/core/src/main/java/org/apache/mahout/common/AbstractJob.java
* 
/mahout/trunk/core/src/main/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/RowSimilarityJob.java

ssc : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1335732
Files : 
* /mahout/trunk/core/src/main/java/org/apache/mahout/common/AbstractJob.java
* 
/mahout/trunk/core/src/main/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/RowSimilarityJob.java
* 
/mahout/trunk/core/src/test/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/RowSimilarityJobTest.java

                
> RowSimilarityJob should be able to infer the number of columns from the input 
> matrix if not specified 
> ------------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-979
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-979
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Math
>    Affects Versions: 0.6, 0.7
>            Reporter: Suneel Marthi
>            Assignee: Suneel Marthi
>            Priority: Minor
>              Labels: mahout
>             Fix For: 0.7
>
>         Attachments: Mahout-979.patch, Mahout-979.patch
>
>
> Presently RowSimilarityJob expects to be provided the 'numberOfColumns' (-r) 
> by the user and this is not an optional argument. If this is not specified 
> explicitly RowSimilarityJob should be able to get the number of columns by 
> the vector size. 

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