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Posted to dev@mahout.apache.org by "Gokhan Capan (Created) (JIRA)" <ji...@apache.org> on 2011/11/02 10:15:32 UTC

[jira] [Created] (MAHOUT-861) Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer

Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer
------------------------------------------------------------------------------------------------

                 Key: MAHOUT-861
                 URL: https://issues.apache.org/jira/browse/MAHOUT-861
             Project: Mahout
          Issue Type: Bug
          Components: Collaborative Filtering
    Affects Versions: 0.6
            Reporter: Gokhan Capan
            Assignee: Sean Owen
            Priority: Minor


I guess the updates on left and right vectors in ExpectationMaximizationSVDFactorizer#train(int i, int j, int f, SVDPreference pref) should be done simultaneously according to the original algorithm (http://sifter.org/~simon/journal/20061211.html)

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[jira] [Resolved] (MAHOUT-861) Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer

Posted by "Sebastian Schelter (Resolved) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAHOUT-861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebastian Schelter resolved MAHOUT-861.
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.6

Nice spot, Gokhan, thank you very much.
                
> Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer
> ------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-861
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-861
>             Project: Mahout
>          Issue Type: Bug
>          Components: Collaborative Filtering
>    Affects Versions: 0.6
>            Reporter: Gokhan Capan
>            Assignee: Sebastian Schelter
>            Priority: Minor
>             Fix For: 0.6
>
>         Attachments: MAHOUT-861.patch
>
>
> I guess the updates on left and right vectors in ExpectationMaximizationSVDFactorizer#train(int i, int j, int f, SVDPreference pref) should be done simultaneously according to the original algorithm (http://sifter.org/~simon/journal/20061211.html)

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[jira] [Commented] (MAHOUT-861) Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer

Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAHOUT-861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13142154#comment-13142154 ] 

Hudson commented on MAHOUT-861:
-------------------------------

Integrated in Mahout-Quality #1135 (See [https://builds.apache.org/job/Mahout-Quality/1135/])
    MAHOUT-861 Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer

ssc : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1196517
Files : 
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/svd/ExpectationMaximizationSVDFactorizer.java

                
> Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer
> ------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-861
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-861
>             Project: Mahout
>          Issue Type: Bug
>          Components: Collaborative Filtering
>    Affects Versions: 0.6
>            Reporter: Gokhan Capan
>            Assignee: Sebastian Schelter
>            Priority: Minor
>             Fix For: 0.6
>
>         Attachments: MAHOUT-861.patch
>
>
> I guess the updates on left and right vectors in ExpectationMaximizationSVDFactorizer#train(int i, int j, int f, SVDPreference pref) should be done simultaneously according to the original algorithm (http://sifter.org/~simon/journal/20061211.html)

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[jira] [Updated] (MAHOUT-861) Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer

Posted by "Gokhan Capan (Updated) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAHOUT-861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gokhan Capan updated MAHOUT-861:
--------------------------------

    Attachment: MAHOUT-861.patch

Here is the patch of two-lines fix
                
> Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer
> ------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-861
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-861
>             Project: Mahout
>          Issue Type: Bug
>          Components: Collaborative Filtering
>    Affects Versions: 0.6
>            Reporter: Gokhan Capan
>            Assignee: Sean Owen
>            Priority: Minor
>         Attachments: MAHOUT-861.patch
>
>
> I guess the updates on left and right vectors in ExpectationMaximizationSVDFactorizer#train(int i, int j, int f, SVDPreference pref) should be done simultaneously according to the original algorithm (http://sifter.org/~simon/journal/20061211.html)

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[jira] [Assigned] (MAHOUT-861) Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer

Posted by "Sebastian Schelter (Assigned) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAHOUT-861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebastian Schelter reassigned MAHOUT-861:
-----------------------------------------

    Assignee: Sebastian Schelter  (was: Sean Owen)
    
> Simultaneously update left and right vectors while training ExpectationMaximizationSVDFactorizer
> ------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-861
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-861
>             Project: Mahout
>          Issue Type: Bug
>          Components: Collaborative Filtering
>    Affects Versions: 0.6
>            Reporter: Gokhan Capan
>            Assignee: Sebastian Schelter
>            Priority: Minor
>             Fix For: 0.6
>
>         Attachments: MAHOUT-861.patch
>
>
> I guess the updates on left and right vectors in ExpectationMaximizationSVDFactorizer#train(int i, int j, int f, SVDPreference pref) should be done simultaneously according to the original algorithm (http://sifter.org/~simon/journal/20061211.html)

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