成功解决sklearn.exceptions.NotFittedError: This StandardScaler instance is not fitted yet. Call ‘fit‘ wi

解决问题

sklearn.exceptions.NotFittedError: This StandardScaler instance is not fitted yet. Call 'fit' with appropriate arguments before using this estimator.

解决思路

sklearn异常未装配错误:此StandardScaler实例尚未装配。在使用这个估计器之前，使用适当的参数调用“fit”。

解决方法

ss_X = StandardScaler()  

ss_y = StandardScaler()

X_train = ss_X.fit_transform(X_train)            

X_test  = ss_X.transform(X_test)