xgboost
摘要：
xgboost 基本概念Given dataseta tree ensemble model uses K additive functions to predict the outputwhere, 是CART的集合优化目标其中，为正则项when train the model in additive manner, minimize the objective for 也即，拟合的是... 阅读全文
posted @ 2018-09-02 23:40 zjgtan 阅读(189) 评论(0) 推荐(0) 编辑
