GNU R package for multiple parameter smoothing estimation

 This package provides functions for generalised additive models (GAMs)
 and other generalized ridge regression problems with multiple smoothing
 parameter selection by GCV or UBRE. It includes an implementation (not
 a clone) of gam().
 .
 This package is part of the set of packages that are 'recommended'
 by R Core and shipped with upstream source releases of R itself.