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https://issues.apache.org/jira/browse/MAHOUT-901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13159161#comment-13159161
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Georgi Stanev commented on MAHOUT-901:
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About the exception line, a user is removed if he doesn't rated an item. Of
course the size1 (size of the array) can be adjusted every time when a user is
removed, but it works with the exception to. If you want you can subtract 1
from size1 every time a user is removed from the array instead of trowing an
exception.
> KnnItemBasedRecommender is not working properly
> -----------------------------------------------
>
> Key: MAHOUT-901
> URL: https://issues.apache.org/jira/browse/MAHOUT-901
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Georgi Stanev
> Assignee: Sean Owen
> Priority: Minor
> Labels: patch
> Fix For: 0.6
>
> Attachments: KnnItemBasedRecommender_new.java
>
>
> For more information see the mailing list archive (KnnItemBasedRecommender
> question)
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