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Posted to dev@mahout.apache.org by "Sean Owen (Updated) (JIRA)" <ji...@apache.org> on 2011/12/01 11:05:39 UTC

[jira] [Updated] (MAHOUT-903) Slope one doesn't write, read diff counts resulting in no recs

     [ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen updated MAHOUT-903:
-----------------------------

    Attachment: MAHOUT-903.patch

One more go-round; need to handle inverse objects correctly
                
> 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
>
>         Attachments: MAHOUT-903.patch, MAHOUT-903.patch, MAHOUT-903.patch
>
>
> 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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