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https://issues.apache.org/jira/browse/MAHOUT-619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved MAHOUT-619.
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Resolution: Fixed
> Add normalized discounted cumulative gain to recommender evaluator
> ------------------------------------------------------------------
>
> Key: MAHOUT-619
> URL: https://issues.apache.org/jira/browse/MAHOUT-619
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.4
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Minor
> Labels: evaluation, ndcg, precision, recall, recommender
> Fix For: 0.5
>
>
> Just tracking a simple improvement: add nDCG to precision and recall
> computations in GenericRecommenderIRStatsEvaluator
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