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Posted to dev@mahout.apache.org by "Sebastian Schelter (JIRA)" <ji...@apache.org> on 2014/05/18 08:47:14 UTC
[jira] [Resolved] (MAHOUT-1453)
ImplicitFeedbackAlternatingLeastSquaresSolver add support for user supplied
confidence functions
[ https://issues.apache.org/jira/browse/MAHOUT-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sebastian Schelter resolved MAHOUT-1453.
----------------------------------------
Resolution: Won't Fix
no activity in four weeks
> ImplicitFeedbackAlternatingLeastSquaresSolver add support for user supplied confidence functions
> ------------------------------------------------------------------------------------------------
>
> Key: MAHOUT-1453
> URL: https://issues.apache.org/jira/browse/MAHOUT-1453
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.9
> Reporter: Adam Ilardi
> Assignee: Sebastian Schelter
> Priority: Minor
> Labels: newbie, patch, performance
> Fix For: 1.0
>
>
> double confidence(double rating) {
> return 1 + alpha * rating;
> }
> The original paper mentions other functions that could be used as well. @ the moment It's not easy for a user to change this without compiling the source.
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