I dont understand the fact that I have to perform preprocessing and feature selection on my training data set only as to prevent data leakage but when I try to use my classifiers in python they want equal dimensions of my train and validation sets. of course they are not anymore if I only preprocess the training set??? What do i have to do.
lilpolymorph t1_j3qrnoh wrote
Reply to [D] Simple Questions Thread by AutoModerator
I dont understand the fact that I have to perform preprocessing and feature selection on my training data set only as to prevent data leakage but when I try to use my classifiers in python they want equal dimensions of my train and validation sets. of course they are not anymore if I only preprocess the training set??? What do i have to do.