This is the Debian package of the GNU R package known as "gam".
The upstream author is Trevor Hastie <hastie@stanford.edu>

This package was created by Chris Lawrence <lawrencc@debian.org>,
based on Dirk Eddelbuettel's packaging of r-cran-car.

The sources were downloaded from 
http://www.cran.mirrors.pair.com/src/contrib/

The package was renamed from its upstream name 'gam' to 'r-cran-gam'
to fit the pattern of CRAN (and non-CRAN) packages for R.

Copyright (C) 2010-11 Trevor Hastie.

It has been placed under the GNU General Public License, version 2.
On Debian systems, the GPL is included in the file
/usr/share/common-licenses/GPL-2.

The upstream DESCRIPTION file for this package is available in
/usr/lib/R/site-library/gam/

loessc.c and loessf.f are distributed under the following license:

 * Copyright (c) 1989, 1992 by AT&T.

 * Permission to use, copy, modify, and distribute this software for any
 * purpose without fee is hereby granted, provided that this entire notice
 * is included in all copies of any software which is or includes a copy
 * or modification of this software and in all copies of the supporting
 * documentation for such software.

 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR AT&T MAKE ANY
 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
 * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.

The upstream source also includes a number of Ratfor programs, written
by Trevor Hastie and Robert Tibshirani, translated into plain Fortran
code.  The original Ratfor programs, along with translations into
Fortran, can be found as a shell archive, available at:

http://lib.stat.cmu.edu/general/gamfit

Specifically, the following Fortran translations are included in this
package, named as follows:

Ratfor      Fortran (gamfit)    Fortran (r-cran-gam)

bakfit.r    bakfit.f            backfit.f
qsbart.r    qsbart.r            qsbart.f
sgram.r     sgram.f             sgram.f
sinerp.r    sinerp.f            sinerp.f
splsm.r     splsm.f             splsm.f
sslvrg.r    sslvrg.f            sslvrg.f
stxwx.r     stxwx.f             stxwx.f

Also, sbart.c is translated from sbart.f (and thus sbart.r) from Gamfit.

According to the authors, "This software is in the public domain."
