owenzhang / kaggle-avito Goto Github PK
View Code? Open in Web Editor NEWWinning solution to the Avito CTR competition
License: MIT License
Winning solution to the Avito CTR competition
License: MIT License
thank you for the solution!
I have a problem about the negative down sampling.
you said :"to speed up training time, I down sample non-events at 50:1 ratio." @owenzhang
because the evaluation is logloss, not the F1 or AUC. I think the negative down sampling can make the ratio of positive and negative become very different between train and test,this can make the logloss in test become larger.
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