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Posted to dev@mahout.apache.org by "Gabriel Reid (JIRA)" <ji...@apache.org> on 2012/09/19 22:07:07 UTC

[jira] [Created] (MAHOUT-1070) DisplayKMeans example has transposed/mislabelled arguments

Gabriel Reid created MAHOUT-1070:
------------------------------------

             Summary: DisplayKMeans example has transposed/mislabelled arguments
                 Key: MAHOUT-1070
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1070
             Project: Mahout
          Issue Type: Bug
          Components: Examples
    Affects Versions: 0.7
            Reporter: Gabriel Reid
            Priority: Minor


The org.apache.mahout.clustering.display.DisplayKMeans example class uses a value for k (numClusters) and maximum number of iterations to come to convergence, but their use is transposed (i.e. the numClusters is used as max iterations, and max iterations is used for numClusters). Furthermore, a second hard-coded version of the value is used. The end result is that it's not directly possible to experiment with different values of numClusters and maxIterations.

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[jira] [Assigned] (MAHOUT-1070) DisplayKMeans example has transposed/mislabelled arguments

Posted by "Paritosh Ranjan (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAHOUT-1070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paritosh Ranjan reassigned MAHOUT-1070:
---------------------------------------

    Assignee: Paritosh Ranjan
    
> DisplayKMeans example has transposed/mislabelled arguments
> ----------------------------------------------------------
>
>                 Key: MAHOUT-1070
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1070
>             Project: Mahout
>          Issue Type: Bug
>          Components: Examples
>    Affects Versions: 0.7
>            Reporter: Gabriel Reid
>            Assignee: Paritosh Ranjan
>            Priority: Minor
>         Attachments: MAHOUT-1070.patch
>
>
> The org.apache.mahout.clustering.display.DisplayKMeans example class uses a value for k (numClusters) and maximum number of iterations to come to convergence, but their use is transposed (i.e. the numClusters is used as max iterations, and max iterations is used for numClusters). Furthermore, a second hard-coded version of the value is used. The end result is that it's not directly possible to experiment with different values of numClusters and maxIterations.

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[jira] [Updated] (MAHOUT-1070) DisplayKMeans example has transposed/mislabelled arguments

Posted by "Gabriel Reid (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAHOUT-1070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabriel Reid updated MAHOUT-1070:
---------------------------------

    Attachment: MAHOUT-1070.patch

Patch to resolve the issue.
                
> DisplayKMeans example has transposed/mislabelled arguments
> ----------------------------------------------------------
>
>                 Key: MAHOUT-1070
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1070
>             Project: Mahout
>          Issue Type: Bug
>          Components: Examples
>    Affects Versions: 0.7
>            Reporter: Gabriel Reid
>            Priority: Minor
>         Attachments: MAHOUT-1070.patch
>
>
> The org.apache.mahout.clustering.display.DisplayKMeans example class uses a value for k (numClusters) and maximum number of iterations to come to convergence, but their use is transposed (i.e. the numClusters is used as max iterations, and max iterations is used for numClusters). Furthermore, a second hard-coded version of the value is used. The end result is that it's not directly possible to experiment with different values of numClusters and maxIterations.

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[jira] [Commented] (MAHOUT-1070) DisplayKMeans example has transposed/mislabelled arguments

Posted by "Paritosh Ranjan (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAHOUT-1070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13462623#comment-13462623 ] 

Paritosh Ranjan commented on MAHOUT-1070:
-----------------------------------------

The problem mentioned is visible in the patch.

The solution provided also looks correct. I will try to test it and commit it. Thanks for contributing.
                
> DisplayKMeans example has transposed/mislabelled arguments
> ----------------------------------------------------------
>
>                 Key: MAHOUT-1070
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1070
>             Project: Mahout
>          Issue Type: Bug
>          Components: Examples
>    Affects Versions: 0.7
>            Reporter: Gabriel Reid
>            Priority: Minor
>         Attachments: MAHOUT-1070.patch
>
>
> The org.apache.mahout.clustering.display.DisplayKMeans example class uses a value for k (numClusters) and maximum number of iterations to come to convergence, but their use is transposed (i.e. the numClusters is used as max iterations, and max iterations is used for numClusters). Furthermore, a second hard-coded version of the value is used. The end result is that it's not directly possible to experiment with different values of numClusters and maxIterations.

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[jira] [Commented] (MAHOUT-1070) DisplayKMeans example has transposed/mislabelled arguments

Posted by "XuHao (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAHOUT-1070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13462615#comment-13462615 ] 

XuHao commented on MAHOUT-1070:
-------------------------------

Bravo! Just catch the same bug and the patch works !

                
> DisplayKMeans example has transposed/mislabelled arguments
> ----------------------------------------------------------
>
>                 Key: MAHOUT-1070
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1070
>             Project: Mahout
>          Issue Type: Bug
>          Components: Examples
>    Affects Versions: 0.7
>            Reporter: Gabriel Reid
>            Priority: Minor
>         Attachments: MAHOUT-1070.patch
>
>
> The org.apache.mahout.clustering.display.DisplayKMeans example class uses a value for k (numClusters) and maximum number of iterations to come to convergence, but their use is transposed (i.e. the numClusters is used as max iterations, and max iterations is used for numClusters). Furthermore, a second hard-coded version of the value is used. The end result is that it's not directly possible to experiment with different values of numClusters and maxIterations.

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