rregm: Reparameterized Regression Models

Provides estimation and data generation tools for several new regression models, including the gamma, beta, inverse gamma, beta prime, log-normal and log-logistic distributions. These models can be parameterized based on the mean, median, mode, geometric mean and harmonic mean, except for the log-logistic model which is based on alternative parametrizations. For details, see Bourguignon and Gallardo (2025a) <doi:10.1016/j.chemolab.2025.105382> and Bourguignon and Gallardo (2025b) <doi:10.1111/stan.70007>. The package also implements higher-order likelihood inference through Skovgaard-adjusted likelihood ratio statistics and predictive shrinkage estimators reparameterized beta regression models.

Version: 1.3
Depends: R (≥ 4.0.0), stats
Imports: extraDistr, pracma, gamlss, gamlss.dist, invgamma, skewMLRM
Published: 2026-07-21
DOI: 10.32614/CRAN.package.rregm
Author: Diego Gallardo [aut, cre], Marcelo Bourguignon [aut], Marcia Brandao [aut], Tiago Magalhaes [ctb], Rafael Izbicki [ctb]
Maintainer: Diego Gallardo <dgallardo at ubiobio.cl>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Materials: NEWS
CRAN checks: rregm results

Documentation:

Reference manual: rregm.html , rregm.pdf

Downloads:

Package source: rregm_1.3.tar.gz
Windows binaries: r-devel: rregm_1.2.zip, r-release: rregm_1.2.zip, r-oldrel: rregm_1.2.zip
macOS binaries: r-release (arm64): rregm_1.3.tgz, r-oldrel (arm64): rregm_1.3.tgz, r-release (x86_64): rregm_1.3.tgz, r-oldrel (x86_64): rregm_1.3.tgz
Old sources: rregm archive

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