资料:
GBDT官方资料:http://scikit-learn.org/stable/modules/generated/sklearn.ensemble.GradientBoostingClassifier.html#sklearn.ensemble.GradientBoostingClassifier
GBDT调参参考:http://www.cnblogs.com/pinard/p/6143927.html
GBDT的参数表:http://www.cnblogs.com/jasonfreak/p/5720137.html
GBDT的使用:http://blog.csdn.net/q383700092/article/details/53744277