ABSTRACT
A generalized additive model (Hastie and Tibshirani, 1986, 1990) is a generalized linear model with a linear predictor involving a sum of smooth functions of covariates. In general the model has a structure something like g ( μ i ) = A i θ + f 1 ( x 1 i ) + f 2 ( x 2 i ) + f 3 ( x 3 i , x 4 i ) + …
