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https://issues.apache.org/jira/browse/HIVEMALL-115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Makoto Yui closed HIVEMALL-115.
-------------------------------
Resolution: Fixed
> Fix ranking AUC for all TP/FP recommendation
> --------------------------------------------
>
> Key: HIVEMALL-115
> URL: https://issues.apache.org/jira/browse/HIVEMALL-115
> Project: Hivemall
> Issue Type: Bug
> Reporter: Takuya Kitazawa
> Assignee: Takuya Kitazawa
>
> If all items in a recommendation list are TP (FP), AUC is meaningless, and it
> should return 0.5 as
> [LibRec|https://github.com/guoguibing/librec/blob/18176ed41027348ee2187d8686a1b2c0d4d39277/core/src/main/java/net/librec/eval/ranking/AUCEvaluator.java#L80-L83]
> and
> [MyMediaLite|https://github.com/zenogantner/MyMediaLite/blob/3a268110338b24627c8c2c973c0f9d03b151e2df/src/MyMediaLite/Eval/Measures/AUC.cs#L51-L52]
> do.
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