Takuya Kitazawa created HIVEMALL-115:
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Summary: 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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