**XGBoost和LightGBM的参数以及调参 - 简书**
https://www.jianshu.com/p/1100e333fcab

Aug 21, 2018 · cross-entropy application xentropy, 目标函数为 cross-entropy (同时有可选择的线性权重), alias=cross_entropy; ... l2_root, root square loss, alias=root_mean_squared_error, rmse; quantile, Quantile regression; huber, Huber loss; fair, Fair loss; poisson, Poisson regression; ndcg, NDCG;

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