XGBoost
https://blog.amedama.jp/entry/2019/01/29/235642
https://sites.google.com/view/lauraepp/parameters
パラメータ
https://threecourse.hatenablog.com/entry/2019/10/21/001346
Misreading Chat
https://misreading.chat/2019/04/11/episode-58-gradient-boosting-decision-trees/
https://misreading.chat/2019/04/24/episode-60-xgboost-a-scalable-tree-boosting-system/