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From "Sean Owen (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAHOUT-903) Slope one doesn't write, read diff counts resulting in no recs
Date Tue, 29 Nov 2011 20:05:39 GMT
Slope one doesn't write, read diff counts resulting in no recs
--------------------------------------------------------------

                 Key: MAHOUT-903
                 URL: https://issues.apache.org/jira/browse/MAHOUT-903
             Project: Mahout
          Issue Type: Bug
          Components: Collaborative Filtering
    Affects Versions: 0.5
            Reporter: Sean Owen
            Assignee: Sean Owen
             Fix For: 0.6


An astute MiA reader points out that the FileDiffStorage class does not have a way to read
diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed
to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise
output counts.

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