Package: gps
Version: 1.2
Date: 2023-11-02
Title: General P-Splines
Authors@R: person("Zheyuan", "Li", role = c("aut", "cre"),
                  email = "zheyuan.li@bath.edu",
                  comment = c(ORCID = "0000-0002-7434-5947"))
Author: Zheyuan Li [aut, cre] (<https://orcid.org/0000-0002-7434-5947>)
Maintainer: Zheyuan Li <zheyuan.li@bath.edu>
Depends: R (>= 4.0.0)
Imports: stats, splines, Matrix, methods, graphics, grDevices
Description: General P-splines are non-uniform B-splines penalized by a general difference penalty, proposed by Li and Cao (2022) <arXiv:2201.06808>. Constructible on arbitrary knots, they extend the standard P-splines of Eilers and Marx (1996) <doi:10.1214/ss/1038425655>. They are also related to the O-splines of O'Sullivan (1986) <doi:10.1214/ss/1177013525> via a sandwich formula that links a general difference penalty to a derivative penalty. The package includes routines for setting up and handling difference and derivative penalties. It also fits P-splines and O-splines to (x, y) data (optionally weighted) for a grid of smoothing parameter values in the automatic search intervals of Li and Cao (2023) <doi:10.1007/s11222-022-10178-z>. It aims to facilitate other packages to implement P-splines or O-splines as a smoothing tool in their model estimation framework.
License: GPL-3
NeedsCompilation: yes
URL: https://github.com/ZheyuanLi/gps
Packaged: 2023-11-02 03:25:41 UTC; lzy
Repository: CRAN
Date/Publication: 2023-11-02 06:30:02 UTC
Built: R 4.5.1; aarch64-apple-darwin20.6.0; 2025-09-15 01:46:56 UTC; unix
