Package: lgspline
Type: Package
Title: Lagrangian Multiplier Smoothing Splines for Smooth Function
        Estimation
Version: 0.3.0
Authors@R: 
    person("Matthew", "Davis", email = "matthewlouisdavis@gmail.com", 
           role = c("aut", "cre"),
           comment = c(ORCID = "0000-0001-9714-1018"))
Description: Implements Lagrangian multiplier smoothing splines for flexible
    nonparametric regression and function estimation. Provides tools for fitting,
    prediction, and inference using a constrained optimization approach to 
    enforce smoothness.
    Supports generalized linear models, Weibull accelerated failure time (AFT) models, 
    quadratic programming problems, and customizable arbitrary correlation structures. 
    Options for fitting in parallel are provided. The method builds upon the framework described 
    by Ezhov et al. (2018) <doi:10.1515/jag-2017-0029> using Lagrangian multipliers 
    to fit cubic splines. For more information on correlation structure estimation, 
    see Searle et al. (2009) <ISBN:978-0470009598>. For quadratic programming and 
    constrained optimization in general, see Nocedal & Wright (2006) <doi:10.1007/978-0-387-40065-5>. 
    For a comprehensive background on smoothing splines, see Wahba (1990) 
    <doi:10.1137/1.9781611970128> and Wood (2006) <ISBN:978-1584884743> 
    "Generalized Additive Models: An Introduction with R".
License: MIT + file LICENSE
Language: en-US
Depends: R (>= 3.5.0)
Imports: Rcpp (>= 1.0.7), RcppArmadillo, FNN, RColorBrewer, plotly,
        quadprog, methods, stats
LinkingTo: Rcpp, RcppArmadillo
Suggests: testthat (>= 3.0.0), spelling, knitr, rmarkdown, parallel,
        survival, graphics
URL: https://github.com/matthewlouisdavisBioStat/lgspline
BugReports: https://github.com/matthewlouisdavisBioStat/lgspline/issues
Encoding: UTF-8
RoxygenNote: 7.3.2
Config/testthat/edition: 3
NeedsCompilation: yes
Packaged: 2025-11-18 05:53:44 UTC; defgi
Author: Matthew Davis [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-9714-1018>)
Maintainer: Matthew Davis <matthewlouisdavis@gmail.com>
Repository: CRAN
Date/Publication: 2025-11-18 06:10:28 UTC
Built: R 4.4.3; x86_64-w64-mingw32; 2026-01-31 06:30:06 UTC; windows
Archs: x64
