Do I need to save the standardization transformation?

Question

When I standardized my data when I created my model. Do I need to save the standardization transformation when I want to predict with my model new data ?

Answer 1

The details of standardized vector is stored in the transformer object. For example X_scaled on this page is storing all details for the mean and SD of the original vectors in training data, and you can use it to scale the new vectors.