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From "Sebastian Schelter (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAHOUT-607) Count used and neglected elements in MaybePruneRowsMapper
Date Fri, 04 Feb 2011 18:52:30 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990676#comment-12990676
] 

Sebastian Schelter commented on MAHOUT-607:
-------------------------------------------

There are too much different counter naming strategies in the code to include them in a quick
refactoring effort here. We should maybe address this in a separate issue.

> Count used and neglected elements in MaybePruneRowsMapper
> ---------------------------------------------------------
>
>                 Key: MAHOUT-607
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-607
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Collaborative Filtering
>    Affects Versions: 0.4
>            Reporter: Sebastian Schelter
>            Assignee: Sean Owen
>            Priority: Minor
>             Fix For: 0.5
>
>         Attachments: MAHOUT-607.patch
>
>
> MaybePruneRowsMapper is used to prune the overall number of preferences/ratings our distributed
recommender looks at. The patch adds counters to the code so we can see the number of used
and neglected preferences in the jobtracker.

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