"It turns out that R2 will always increase when more variables are added to the model, even if those variables are only weakly associated with the response."
"Chapter 2 introduces the basic terminology and concepts behind statistical learning. Chapters 3 and 4 cover classical linear methods for regression and classification. In particular, Chapter 3 reviews linear regression, the fundamental starting point for all regression methods. In Chapter 4 we discu"
"In this new book, we cover many of the same topics as ESL, but we concentrate more on the applications of the methods and less on the mathematical details. We have created labs illustrating how to implement each of the statictical learning methods using the popular statistical software package R. ``"