apollo: Tools for Choice Model Estimation and Application

Choice models are a widely used technique across numerous scientific disciplines. The Apollo package is a very flexible tool for the estimation and application of choice models in R. Users are able to write their own model functions or use a mix of already available ones. Random heterogeneity, both continuous and discrete and at the level of individuals and choices, can be incorporated for all models. There is support for both standalone models and hybrid model structures. Both classical and Bayesian estimation is available, and multiple discrete continuous models are covered in addition to discrete choice. Multi-threading processing is supported for estimation and a large number of pre and post-estimation routines, including for computing posterior (individual-level) distributions are available. For examples, a manual, and a support forum, visit <https://www.ApolloChoiceModelling.com>. For more information on choice models see Train, K. (2009) <isbn:978-0-521-74738-7> and Hess, S. & Daly, A.J. (2014) <isbn:978-1-781-00314-5> for an overview of the field.

Version:	0.3.7
Depends:	R (≥ 4.3.0), stats, utils
Imports:	Rcpp (≥ 1.0.0), maxLik, mnormt, mvtnorm, graphics, randtoolbox, numDeriv, parallel, Deriv, matrixStats, RSGHB, coda, tibble, stringr, bgw (≥ 0.1.4), cli, Rsolnp, rstudioapi
LinkingTo:	Rcpp, RcppArmadillo, RcppEigen
Suggests:	knitr, rmarkdown, testthat
Published:	2026-03-13
DOI:	10.32614/CRAN.package.apollo
Author:	Stephane Hess [aut, cre], David Palma [aut], Thomas Hancock [ctb]
Maintainer:	Stephane Hess <S.Hess at leeds.ac.uk>
BugReports:	https://www.ApolloChoiceModelling.com/forum/
License:	GPL-2
URL:	https://www.ApolloChoiceModelling.com
NeedsCompilation:	yes
Citation:	apollo citation info
In views:	Econometrics
CRAN checks:	apollo results

Documentation:

Reference manual:	apollo.html , apollo.pdf
Vignettes:	Model file examples (source, R code)

Downloads:

Package source:	apollo_0.3.7.tar.gz
Windows binaries:	r-devel: apollo_0.3.7.zip, r-release: apollo_0.3.6.zip, r-oldrel: apollo_0.3.7.zip
macOS binaries:	r-release (arm64): apollo_0.3.7.tgz, r-oldrel (arm64): apollo_0.3.7.tgz, r-release (x86_64): apollo_0.3.7.tgz, r-oldrel (x86_64): apollo_0.3.7.tgz
Old sources:	apollo archive

Reverse dependencies:

Reverse suggests:

logitr, support.BWS

Linking:

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