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为什么用 rank:pairwise 作为目标？ #1

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modkzs opened this issue Dec 28, 2016 · 1 comment

modkzs commented Dec 28, 2016

我看你们第一赛季代码的 xgb 是用 rank:pairwise 作为目标的。我用分类作为目标会造成严重的过拟合。这有什么原因么？

Owner

wepe commented Dec 28, 2016

这道题rank:pairwise与binary:logistic差不多的，线下赛发现rank:pairwise稍微好一点。你说的过拟合，不可能是loss function造成的，找找其他原因吧。

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