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https://issues.apache.org/jira/browse/MAHOUT-463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897390#action_12897390
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Sebastian Schelter commented on MAHOUT-463:
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I wrote a small unit test and I encountered quite the opposite behavior as
described by Hui.
When using boolean data the already known items were not filtered out. I will
create a patch for this soon. But the rest of the recommendation process worked.
> Boolean Data can not get any recommendation by running RecommnenderJob
> ----------------------------------------------------------------------
>
> Key: MAHOUT-463
> URL: https://issues.apache.org/jira/browse/MAHOUT-463
> Project: Mahout
> Issue Type: Test
> Components: Collaborative Filtering
> Affects Versions: 0.4
> Reporter: Hui Wen Han
> Fix For: 0.4
>
>
> Boolean Preference Data can not get any recommendation by run RecommnenderJob,
> but It can get data using the build in about Aprl.
> It seems that it can not get any data by running RowSimilarityJob
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