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晚上有一个朋友看到推送问我,对categorical feature 为什么要做target encoding。其实这比较取决于模型,不过对于tabular data常用的tree based model来说,OHE是比较差的,如果是用xgboost需要自己做target encoding,catBoost/lightGBM不需要,自带了。https://medium.com/data-design/visiting-categorical-features-and-encoding-in-decision-trees-53400fa65931



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晚上有一个朋友看到推送问我,对categorical feature 为什么要做target encoding。其实这比较取决于模型,不过对于tabular data常用的tree based model来说,OHE是比较差的,如果是用xgboost需要自己做target encoding,catBoost/lightGBM不需要,自带了。https://medium.com/data-design/visiting-categorical-features-and-encoding-in-decision-trees-53400fa65931

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