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From "Sebastian Schelter (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAHOUT-570) Make the retrieval of candidate items for the most-similar-items computation customizable
Date Fri, 31 Dec 2010 10:11:46 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebastian Schelter updated MAHOUT-570:
--------------------------------------

    Fix Version/s: 0.5
           Status: Patch Available  (was: Open)

attached a patch to make our existing CandidateItemsStrategy implementations usable for the
most-similar-items computation too. I will commit this in the next days if there are no ojections

> Make the retrieval of candidate items for the most-similar-items computation customizable
> -----------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-570
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-570
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Collaborative Filtering
>    Affects Versions: 0.5
>            Reporter: Sebastian Schelter
>             Fix For: 0.5
>
>         Attachments: MAHOUT-570.patch
>
>
> When retrieving the initial set of possibly similar items in GenericItemBasedRecommender.doMostSimilarItems(...)
only co-occurring items are selected. We need an exchangable strategy (similar to the existing
CandidateItemsStrategy) in order to make this behavior customizable.

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