Package: changepointGA
Type: Package
Title: Changepoint Detection via Modified Genetic Algorithms
Version: 0.2.0
Date: 2026-09-19
Authors@R: c(
           person(given = "Mo",
                  family = "Li",
                  role = c("aut", "cre"),
                  email = "mo.li@louisiana.edu"),
           person(given = "QiQi", 
                  family = "Lu", 
                  role = "aut", 
                  email = "qlu2@vcu.edu")
            )
Description: 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. The structured and
        consensus-guided island model GA additionally incorporates
        cross-island consensus guidance and optional objective-based
        local refinement. 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 and Lu
        (2024, <doi:10.48550/arXiv.2410.15571>).
License: MIT + file LICENSE
Depends: R (>= 4.3.0)
Imports: methods, foreach, doParallel, Rcpp, clue, stats, utils
LinkingTo: Rcpp, RcppArmadillo
SystemRequirements: C++17
URL: https://github.com/mli171/changepointGA
BugReports: https://github.com/mli171/changepointGA/issues
Suggests: knitr, rmarkdown, testthat (>= 3.0.0)
Encoding: UTF-8
VignetteBuilder: knitr
Config/testthat/edition: 3
Config/roxygen2/version: 8.0.0
Repository: https://mli171.r-universe.dev
Date/Publication: 2026-09-19 23:56:58 UTC
RemoteUrl: https://github.com/mli171/changepointga
RemoteRef: HEAD
RemoteSha: af6b987241708b8da12a53b7872d01cf0291418e
NeedsCompilation: yes
Packaged: 2026-10-20 06:30:35 UTC; root
Author: Mo Li [aut, cre],
  QiQi Lu [aut]
Maintainer: Mo Li <mo.li@louisiana.edu>