Data sets, functions and examples from the book: "The Elements
of Statistical Learning, Data Mining, Inference, and
Prediction" by Trevor Hastie, Robert Tibshirani and Jerome
Friedman.
Material from the book's webpage, R port and packaging by
        Kjetil Halvorsen
Useful when reading the book above mentioned, in the
        documentation referred to as `the book'.
gam, splines, MASS, class, leaps, mda, lasso2, lars, boot,
prim, earth