R Observatory: Metrics for libcmaesr version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

libcmaesr

0.1.0Package record

R Interface to 'libcmaes'

0packages dependsuggested by 2

2.5Kdownloads / year

51.8%test coverage

13/13flavors OK

Overview

About

Maintained by Marc BeckerCRAN page ↗GitHub ↗Website ↗Issues ↗

A lightweight interface to the 'libcmaes' C++ library for the Covariance Matrix Adaptation Evolution Strategy (CMA-ES). CMA-ES is a state-of-the-art evolutionary algorithm for the optimization of difficult non-linear, non-convex black-box functions, as described in Hansen and Ostermeier (2001) doi:10.1162/106365601750190398. Supports the active, separable, and VD (diagonal plus rank-one covariance) variants of the algorithm as well as the IPOP (increasing population size) and BIPOP (bi-population) restart strategies. A patched copy of 'libcmaes' (LGPL >= 3) is bundled; see the COPYRIGHTS file for details.

Changes in 0.1.0

Initial CRAN release.

From NEWS.md in the release

Install

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

install.packages("libcmaesr", 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("mlr-org/libcmaesr")

Development version from mlr-org/libcmaesr. 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-libcmaesr

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-libcmaesr

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-libcmaesr

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 7.2 min · r-oldrel-windows-x86_64

Status changes

OK13 OKNow
OK6 OK2026-08-08

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.0

READMEYes · 227 wordsVignettesNoNEWSYes · 67% structured · mentions 0.1.0Citation fileNoWebsiteYes · pkgdown

Help pages: 4includes a package overview page
Examples that run: 100%3 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

2.5K

CRAN downloads in the past year

Rank #3,800 · ~7/day · ~207/mo

Releases R versions

Daily download trend is not available in this view yet.

1.4K30 days

2.5K90 days

2.5K1 year

Compare downloads with other packages →

Also on34 r2u1 autocran

How downloads are counted

Repository

mlr-org/libcmaesr ↗Organization: mlr-org

4Stars

0Forks

0Open issues

1Open PRs

1Releases

151Commits

5Commit identities

151 commits · Last activity 2026-09-23 · Default branch at 0.1.0.9000, ahead of CRAN 0.1.0 (checked 2026-10-18)

Responsiveness

How these are sampled

PRs merged (all time): 92%
Median days to close, 50 most recently updated closed issues: 56
Median days to close, 50 most recently updated closed PRs: 0

Releases over time

2026-08-08 · 02026-09-24 · 1

How these are measured

PracticesBeta

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

Checks run against github.com/mlr-org/libcmaesr on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Governance and community (3)

Contributing guide (inherited from mlr-org)

Funding links: GitHub Sponsors

The repository owner accepts GitHub Sponsors

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-09-23 · The repository has a site deploy workflow

pkgdown site last built 2026-09-23

CRAN release process (1)

cran-comments.md

Show all practicesHide 1 practice

Lint, format, editor (4)

lintrAirEditorConfigVS Code

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Cursorfirst seen 2025-08-09
Seen in the repository: .cursor
Named in .Rbuildignore: .cursor
Claude Codefirst seen on or before 2026-07-27
Seen in the repository: .claude, CLAUDE.md
Named in .Rbuildignore: .claude, CLAUDE.md
Named in .gitignore: .claude, CLAUDE.md
Pull request it wrote: opened by a project member
Commits: at least 16 crediting it in the message
Codexfirst seen 2026-09-23
Seen in the repository: .codex
Named in .Rbuildignore: .codex

Shared conventions any agent may read, so they name no particular tool.

Seen in the repository: AGENTS.md

Models named in its commits

Claude Opus 510 commits · Jul to Sep 2026
Claude Fable 55 commits · Jul 2026
Claude Opus 5.51 commit · Sep 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Installing libcmaesr adds 9 packages (8 with compiled code, 10 MB of source tarballs). Heaviest: data.table 5.7 MB, Rcpp 1.8 MB, RcppEigen 1.7 MB.

Depends (1)

R >= 4.2.0

Imports (3)

checkmate mlr3miscstats

LinkingTo (1)

RcppEigen

Suggests (2)

testthat callr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Suggested by 2

Suggests, most downloaded first

bbotk mlr3tuning

How these are counted

Code & Tests

People & History

People (6)

Author

Author

Author

Contributor, Copyright holder

author of the bundled 'libcmaes' library

Inria

Copyright holder

copyright holder of parts of the bundled 'libcmaes' library

Releases (1)

0.1.0Latest
record
2026-08-07 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-08-07
Total releases: 1 / 1 yrs
License: LGPL (>= 3) OSI
Copyright: See the file COPYRIGHTS for details on the bundled 'libcmaes' copyrights
Minimum R: ≥ 4.2.0
Download size: 75 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("libcmaesr")

Format

Becker, M., Inria, Benazera, E., Binder, M., Bischl, B., & Kotthoff, L. (2026). libcmaesr: R Interface to 'libcmaes' (Version 0.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.libcmaesr

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

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 libcmaesr version 0.1.0 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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