[jira] Issue Comment Edited: (MAHOUT-358) the pref value field of output of org.apache.mahout.cf.taste.hadoop.item.RecommenderJob has negative

["Hui Wen Han (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAHOUT-358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854387#action_12854387 ] 

Hui Wen Han edited comment on MAHOUT-358 at 4/7/10 8:59 AM:
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it seems that we got the dirty data here;

recommendations.addAll(topItems);

or List<RecommendedItem> recommendations has element that we do not fill it.

I want to get 10 recommendation items,but it exceeds 10 sometime and data is strange.



      was (Author: huiwenhan):
    it seems that we got the dirty data here;

recommendations.addAll(topItems);

I want to get 10 recommendation items,but it exceeds 10 sometime and data is strange.


  
> the pref value  field of output of org.apache.mahout.cf.taste.hadoop.item.RecommenderJob has negative
> -----------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-358
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-358
>             Project: Mahout
>          Issue Type: Test
>          Components: Collaborative Filtering
>    Affects Versions: 0.4
>            Reporter: Hui Wen Han
>         Attachments: 20100407_steer_item_out_part-00000, attempt_201004011623_0070_m_000000_0.htm, screenshot-1.jpg, screenshot-2.jpg
>
>
> In my test the input pref values all is positive.
> the output score value has negative value ,

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