Package: quadrupen Type: Package Title: Sparse and Group Sparse Linear Models Version: 1.1-0 Date: 2026-09-17 Authors@R: person("Julien", "Chiquet", email = "julien.chiquet@inrae.fr", role = c("aut", "cre"), comment = c(ORCID = "0000-0002-3629-3429")) Description: Fits the solution paths of classical sparse regression models with efficient active set algorithms by solving small sub-problems. Include LASSO, SCAD, MCP, (Sparse) Group-LASSO, Cooperative-LASSO, (Group) LAVA, (Generalized) Fused-Lasso and (Generalized) Elastic-Net. Also provides methods for model selection purpose (information criteria, cross-validation, stability selection). URL: https://github.com/jchiquet/quadrupen, https://jchiquet.github.io/quadrupen/ BugReports: https://github.com/jchiquet/quadrupen/issues License: GPL (>= 3) Encoding: UTF-8 Language: en-US SystemRequirements: GNU make Depends: R (>= 4.1.0) Imports: dplyr, ggplot2, grid, Matrix, methods, parallel, R6, Rcpp, rlang, scales, tidyr, lifecycle Suggests: elasticnet, glmnet, igraph, knitr, lars, MASS, ncvreg, grpreg, rmarkdown, testthat LinkingTo: Rcpp, RcppArmadillo Collate: 'init.R' 'quadrupen-package.R' 'QuadrupenFit-R6Class.R' 'quadrupen-S3Methods.R' 'Regularizers-R6Class.R' 'DataModel-R6Class.R' 'StabilityPath-R6Class.R' 'CrossValidation-R6Class.R' 'InformationCriteria-R6Class.R' 'bounded-reg.R' 'fused-lasso.R' 'sparse_lm.R' 'sparse_lm_aliases.R' 'group_sparse_lm.R' 'group_sparse_lm_aliases.R' 'group-lava.R' 'lava.R' 'utils.R' 'ridge.R' 'RcppExports.R' Packaged: 2026-10-17 10:49:38 UTC; root Roxygen: list(markdown = TRUE) Config/roxygen2/version: 8.0.0 VignetteBuilder: knitr Config/pak/sysreqs: make libicu-dev Repository: https://jchiquet.r-universe.dev Date/Publication: 2026-09-17 16:56:37 UTC RemoteUrl: https://github.com/jchiquet/quadrupen RemoteRef: HEAD RemoteSha: 12f15a1c9e04b58861173b7d6c9de2ea52a5d76d NeedsCompilation: yes Author: Julien Chiquet [aut, cre] (ORCID: ) Maintainer: Julien Chiquet