ADDITIVE MODEL
The additive model is a non-parametric model where the linear coefficients
of previous models are replaced by smoothers S1, ... ,Sp
A smoother is an arbitrary function that appears as a smooth curve through a scatterplot of points
An additive model can contain a combination of parametric linear functions and non-parametric smooth functions
Generalized Additive Models 23.4.96 Page : 3d of 15