cotram: Count Transformation Models

Count transformation models featuring parameters interpretable as discrete hazard ratios, odds ratios, reverse-time discrete hazard ratios, or transformed expectations. An appropriate data transformation for a count outcome and regression coefficients are simultaneously estimated by maximising the exact discrete log-likelihood using the computational framework provided in package 'mlt', technical details are given in Siegfried & Hothorn (2020) <doi:10.1111/2041-210X.13383>. The package also contains an experimental implementation of multivariate count transformation models with an application to multi-species distribution models <doi:10.48550/arXiv.2201.13095>.

Version:	0.6-0
Depends:	R (≥ 3.5.0), tram (≥ 1.3-0), mlt (≥ 1.7-0)
Imports:	variables (≥ 1.0-2), basefun (≥ 1.0-5), survival, utils, qrng
Suggests:	TH.data, knitr, lattice, colorspace, multcomp, mvtnorm, numDeriv, viridis, Hmsc
Published:	2025-11-19
DOI:	10.32614/CRAN.package.cotram
Author:	Sandra Siegfried [aut, cre], Luisa Barbanti [aut], Torsten Hothorn [aut]
Maintainer:	Sandra Siegfried <sandra.siegfried at alumni.uzh.ch>
License:	GPL-2
URL:	http://ctm.R-forge.R-project.org
NeedsCompilation:	no
Citation:	cotram citation info
Materials:	NEWS
CRAN checks:	cotram results

Documentation:

Reference manual:	cotram.html , cotram.pdf
Vignettes:	cotram (source, R code)

Downloads:

Package source:	cotram_0.6-0.tar.gz
Windows binaries:	r-devel: cotram_0.6-0.zip, r-release: cotram_0.6-0.zip, r-oldrel: cotram_0.6-0.zip
macOS binaries:	r-release (arm64): cotram_0.6-0.tgz, r-oldrel (arm64): cotram_0.6-0.tgz, r-release (x86_64): cotram_0.6-0.tgz, r-oldrel (x86_64): cotram_0.6-0.tgz
Old sources:	cotram archive

Reverse dependencies:

Reverse imports:	tramicp, tramvs
Reverse suggests:	tram

Linking:

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