R Observatory: Metrics for changepointGA version 0.1.5

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

changepointGA

0.1.5

Changepoint Detection via Modified Genetic Algorithms

2packages depend

5.4Kdownloads / year

68.2%test coverage

13/13checks pass

Overview

About

Maintained by Mo LiFirst published 2025-02-175 releasesCRAN page ↗GitHub ↗

The Genetic Algorithm (GA) is used to perform changepoint analysis in time series data. The package also includes an extended island version of GA, as described in Lu, Lund, and Lee (2010, doi:10.1214/09-AOAS289). By mimicking the principles of natural selection and evolution, GA provides a powerful stochastic search technique for solving combinatorial optimization problems. In 'changepointGA', each chromosome represents a changepoint configuration, including the number and locations of changepoints, hyperparameters, and model parameters. The package employs genetic operators—selection, crossover, and mutation—to iteratively improve solutions based on the given fitness (objective) function. Key features of 'changepointGA' include encoding changepoint configurations in an integer format, enabling dynamic and simultaneous estimation of model hyperparameters, changepoint configurations, and associated parameters. The detailed algorithmic implementation can be found in the package vignettes and in the paper of Li (2024, doi:10.48550/arXiv.2410.15571).

Install

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

install.packages("changepointGA", 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("mli171/changepointGA")

Development version from mli171/changepointGA. 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-changepointga

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-changepointGA

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-changepointGA

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

Health

CRAN checks

13OK

Slowest check: 11.8 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.16

68.2%

Coverage · measured lines

100%

Documentation · exports

7

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-16
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-15
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 2 earlier snapshots

ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 256 wordsVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 67%
Documented parameters: 100%
Return-value docs: 100%
References docs: 5%

Downloads

5.4K

CRAN downloads in the past year

Rank #6,148 · ~15/day · ~446/mo

Releases R versions

Daily download trend is not available in this view yet.

25930 days

1.3K90 days

5.4K1 year

Compare downloads with other packages →

Also on539 r2u32 autocran

Repository

GitHub ↗ mli171/changepointga

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2026-06-03

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/mli171/changepointga on 2026-08-23.

CRAN release process (1)

CRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.3.0

Imports (7)

methodsforeach doParallel Rcpp cluestatsutils

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (3)

knitr rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

GAReg tidychangepoint

Code & Tests

People & History

People (2)

Maintainer (1)

Mo Li

Author, Maintainer

Authors (2)

Mo Li

Author, Maintainer

QiQi Lu

Author · added in 0.1.1

Package Timeline

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

0.1.5Latest
2026-05-18 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
0.1.4
2026-03-28 · diff ↗
0.1.3
2025-09-28 · diff ↗
0.1.1
2025-05-22 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.1.0
2025-02-17
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2025-02-17
Total releases: 5 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.3.0
Download size: 207 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Time Series Analysis

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("changepointGA")

Format

Li, M., & Lu, Q. (2026). changepointGA: Changepoint Detection via Modified Genetic Algorithms (Version 0.1.5) [Computer software]. https://doi.org/10.32614/CRAN.package.changepointGA

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 changepointGA version 0.1.5 [Data set]. HJJB, LLC. Data release v2026-08-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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