[jira] Resolved: (MAHOUT-354) make the output of RecommenderJob more readable

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved MAHOUT-354.
------------------------------

         Assignee: Sean Owen
    Fix Version/s: 0.4
       Resolution: Fixed

> make the output of RecommenderJob more readable
> -----------------------------------------------
>
>                 Key: MAHOUT-354
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-354
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Collaborative Filtering
>    Affects Versions: 0.4
>            Reporter: Hui Wen Han
>            Assignee: Sean Owen
>             Fix For: 0.4
>
>         Attachments: screenshot-1.jpg
>
>
> now the output of  RecommenderMapper as following:
> output.collect(userID, new RecommendedItemsWritable(recommendations));
> Can we change it more readable like following:
>    private final Text user = new Text();
>     private final Text recomScore = new Text();
>     private static final String FIELD_SEPERATOR = ",";
>     for (RecommendedItem recommendation : recommendations)
>     {
>     	user.set(String.valueOf(userId));
>     	recomScore.set(recommendation.getItemID() + FIELD_SEPERATOR + recommendation.getValue());
>         output.collect(user, recomScore);
>     }
> then user can read and verify the result more convenient and need not depend on the mahout  API

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