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Posted to dev@mahout.apache.org by "Suneel Marthi (JIRA)" <ji...@apache.org> on 2013/08/07 03:32:48 UTC
[jira] [Updated] (MAHOUT-1303)
GenericItemBasedRecommender.estimate(id) method confusing (line 347-349)
[ https://issues.apache.org/jira/browse/MAHOUT-1303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Suneel Marthi updated MAHOUT-1303:
----------------------------------
Fix Version/s: 0.9
Status: Patch Available (was: Open)
Patch available.
> GenericItemBasedRecommender.estimate(id) method confusing (line 347-349)
> -------------------------------------------------------------------------
>
> Key: MAHOUT-1303
> URL: https://issues.apache.org/jira/browse/MAHOUT-1303
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.9
> Reporter: chsz wu
> Assignee: Sean Owen
> Priority: Minor
> Fix For: 0.9
>
>
> --------
> if (excludeItemIfNotSimilarToAll || !Double.isNaN(estimate)) { -- line 347
> average.addDatum(estimate);
> }
> -----
> line 347 seems logic confusing,
> if excludeItemIfNotSimilarToAll == true, -> always add data into average, doesn't matter what the data is , Nan ???
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