随机森林 对数据样本及特征随机抽取,进行多个决策树训练,防止过拟合,提高泛化能力 一般随机森林的特点: 1.有放回抽样(所以生成每棵树的时候,实际数据集会有重复), 2.以最优划分分裂 Given a standard training set D of size n, bagging generates m new training sets D_i, each of size n′, by sampling from D uniformly and with replacement. Thi