quadrupen

1.0-0

Sparse and Group Sparse Linear Models

0packages depend

5.5Kdownloads / year

17.5%test coverage

13/13checks pass

Overview

About

Maintained by Julien ChiquetFirst published 2012-10-1016 releasesCRAN page ↗GitHub ↗

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).

Install

R (CRAN)pak (dev)Ubuntu (r2u)openSUSE (OBS)

install.packages("quadrupen", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("jchiquet/quadrupen")

Development version from jchiquet/quadrupen. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-quadrupen

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-quadrupen

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 15.6 min · r-oldrel-windows-x86_64

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Show 1 earlier snapshots

NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

Documentation signals are not tracked yet for this package.

Downloads

5.5K

CRAN downloads in the past year

Rank #9,432 · ~15/day · ~460/mo

quadrupen Releases R versions

Daily download trend is not available in this view yet.

35630 days

1.2K90 days

5.5K1 year

Compare downloads with other packages →

Also on428 r2u20 autocran

Repository

GitHub ↗ jchiquet/quadrupen

1Stars

0Forks

0Open issues

0Open PRs

1Releases

284Commits

1Contributors

License GPL-3.0 · 284 commits · Last activity 2026-06-08

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/jchiquet/quadrupen on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Docs source (1)

README.qmd

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

19 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (12)

dplyr ggplot2gridMatrixmethodsparallelR6 Rcpp rlang scales tidyr lifecycle

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (10)

elasticnet glmnet igraph knitr larsMASSncvreg grpreg rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (1)

Maintainer (1)

Julien Chiquet

Author, Maintainer

Authors (1)

Julien Chiquet

Author, Maintainer

Package Timeline

16 releases. R releases are shown for context.

1.0-0Latest
2026-06-05 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
0.2-13
2025-10-09 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.2-12
2024-06-25 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.2-11
2023-12-18 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.2-10
2023-01-16 · diff ↗
0.2-9
2022-08-25 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.2-8
2020-11-18 · diff ↗
unarchivedReturned to CRAN
2020-11-18
archivedRemoved from CRAN
2020-11-03
check problems were not corrected in time
R
R 4.0.0 released · 2020-04-24

Show 17 earlier events

0.2-7
2019-08-28 · diff ↗
R
R 3.6.0 released · 2019-04-26
0.2-6
2018-04-30 · diff ↗
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
0.2-5
2017-03-07 · diff ↗
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
0.2-4
2014-01-16 · diff ↗
0.2-3
2013-09-30 · diff ↗
0.2-2
2013-04-08 · diff ↗
R
R 3.0.0 released · 2013-04-03
0.2-1
2013-02-27 · diff ↗
0.2-0
2013-02-26 · diff ↗
0.1-0
2012-10-10
R
R 2.15.0 released · 2012-03-30

Package metadata

First published: 2012-10-10
Total releases: 16 / 14 yrs
License: GPL (>= 3) OSI
Download size: 62 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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