sklearn随机梯度下降回归,梯度下降法代码

importnumpyasnpfromsklearn.linear _ modelimportsgdclassifierfromsklearn.preprocessingimportstandardscalerfromsklearn.pipimsklearn sklearn.piprn peline X=np.array (平静的往事，-1)、[-2，-1]、[ 1，1 ]、[ 2，1 ] ) y=NP.array ([ 1，1，2，2 ] 2 ) # alwaysscaletheinput.themostconvenientwayistouseapipeline.clf=make _ pipeline (standardscaler )，