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Posted to dev@mahout.apache.org by "Xiaomeng Huang (JIRA)" <ji...@apache.org> on 2014/07/04 04:25:33 UTC

[jira] [Updated] (MAHOUT-1591) Parallel job in recommendation

     [ https://issues.apache.org/jira/browse/MAHOUT-1591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiaomeng Huang updated MAHOUT-1591:
-----------------------------------

    Description: Now all job in recommendation are sequential. But some jobs are not depend on the previous job. For example, in PreparePreferenceMatrixJob.java, the input of job itemIDIndex and toUserVectors are same. So they can run concurrently. And so as RowSimilarityJob.java.  (was: Now all job in recommendation are sequential. But some jobs are not depend on the previous job. For example, in PreparePreferenceMatrixJob.java, the input of job itemIDIndex and toUserVectors are same. So they can run concurrently. And so as RowSimilarityJob.java.
I think this will be a obvious performance improvement.)

> Parallel job in recommendation
> ------------------------------
>
>                 Key: MAHOUT-1591
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1591
>             Project: Mahout
>          Issue Type: Improvement
>            Reporter: Xiaomeng Huang
>
> Now all job in recommendation are sequential. But some jobs are not depend on the previous job. For example, in PreparePreferenceMatrixJob.java, the input of job itemIDIndex and toUserVectors are same. So they can run concurrently. And so as RowSimilarityJob.java.



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