R Observatory: Metrics for ncpen version 1.0.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

ncpen

1.0.1

Unified Algorithm for Non-Convex Penalized Estimation for Generalized Linear Models

0packages depend

2.3Kdownloads / year

–test coverage

11/11checks pass

Overview

About

Maintained by Dongshin KimFirst published 2018-02-213 releasesCRAN page ↗GitHub ↗

An efficient unified nonconvex penalized estimation algorithm for Gaussian (linear), binomial Logit (logistic), Poisson, multinomial Logit, and Cox proportional hazard regression models. The unified algorithm is implemented based on the convex concave procedure and the algorithm can be applied to most of the existing nonconvex penalties. The algorithm also supports convex penalty: least absolute shrinkage and selection operator (LASSO). Supported nonconvex penalties include smoothly clipped absolute deviation (SCAD), minimax concave penalty (MCP), truncated LASSO penalty (TLP), clipped LASSO (CLASSO), sparse ridge (SRIDGE), modified bridge (MBRIDGE) and modified log (MLOG). For high-dimensional data (data set with many variables), the algorithm selects relevant variables producing a parsimonious regression model. Kim, D., Lee, S. and Kwon, S. (2021) doi:10.32614/RJ-2021-003, Lee, S., Kwon, S. and Kim, Y. (2016) doi:10.1016/j.csda.2015.08.019, Kwon, S., Lee, S. and Kim, Y. (2015) doi:10.1016/j.csda.2015.07.001. (This research is funded by Julian Virtue Professorship from Center for Applied Research at Pepperdine Graziadio Business School and the National Research Foundation of Korea.)

Install

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

install.packages("ncpen", 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("zeemkr/ncpen")

Development version from zeemkr/ncpen. 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-ncpen

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

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-ncpen

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# 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-ncpen

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

Health

CRAN checks

11OK

Slowest check: 3.5 min · r-devel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

1

Dependencies · direct

Check history

OK2026-08-21
6 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-03-10
0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 264 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 98%
Return-value docs: 89%
References docs: 45%

Downloads

2.3K

CRAN downloads in the past year

Rank #24,869 · ~6/day · ~193/mo

Releases R versions

Daily download trend is not available in this view yet.

8130 days

8190 days

2.3K1 year

Compare downloads with other packages →

Also on397 r2u24 autocran

Repository

GitHub ↗ zeemkr/ncpen

8Stars

1Forks

2Open issues

0Open PRs

0Releases

132Commits

2Contributors

nonconvex-penaltieslassoscadmcptlpclassosridgembridge

132 commits · Last activity 2026-08-19

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/zeemkr/ncpen on 2026-08-23.

Continuous integration (2)

GitHub ActionsTravis CI

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

Git structural (1)

.gitattributes

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

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.4

Imports (1)

Rcpp

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (3)

Maintainer (1)

Dongshin Kim

Author, Maintainer, Copyright holder

Authors (3)

Dongshin Kim

Author, Maintainer, Copyright holder

Sunghoon Kwon

Author, Copyright holder

Sangin Lee

Author, Copyright holder

Copyright holders (3)

Dongshin Kim

Author, Maintainer, Copyright holder

Sunghoon Kwon

Author, Copyright holder

Sangin Lee

Author, Copyright holder

Package Timeline

3 releases. Pick two to compare their code metrics. R releases are shown for context.

1.0.1Latest
2026-08-20 · current release · diff ↗
unarchivedReturned to CRAN
2026-08-20
R
R 4.6.0 released · 2026-04-24
archivedRemoved from CRAN
2026-03-21
issues were not corrected despite reminders
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
1.0.0
2018-11-17 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.2.0
2018-02-21
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2018-02-21
Total releases: 3 / 8 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 3.4
Download size: 48 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("ncpen")

Format

Kim, D., Kwon, S., & Lee, S. (2026). ncpen: Unified Algorithm for Non-Convex Penalized Estimation for Generalized Linear Models (Version 1.0.1) [Computer software]. https://doi.org/10.32614/CRAN.package.ncpen

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for ncpen version 1.0.1 [Data set]. HJJB, LLC. Data release v2026-08-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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