Why couldn’t we use directly the test set to evaluate our model and adjust hyperparameters? I am still confused about the utility of the validation set. I think that the test set can also do the job of the validation set which is smaller. After all, we want to get a minimum loss on the test set, so if we evaluate our model and adjust it directly based on the test set, it will be better, won’t it?
Thank you very much and have a nice day,