weixin_44128597的博客

先自定义实现一下Scalefrom sklearn import preprocessingimport numpy as npx=np.array([[10,112,2],[10,0,0],[0,30,-1]])#求均值X_mean=x.mean(axis=0)X_std=x.std(axis=0)#求方差#将每一个列都比昂其标准化的正态分布x_scale=preprocess...