apollo
Tools for Choice Model Estimation and Application
Description
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.
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CRAN Check Status
Show all 14 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | NOTE |
| r-devel-linux-x86_64-debian-gcc | NOTE |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-macos-arm64 | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | NOTE |
| r-release-linux-x86_64 | NOTE |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check details (14 non-OK)
R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.
R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.
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R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.
R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.
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Check History
NOTE 10 OK · 4 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026
R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.
R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.
R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.
R code for possible problems
Found the following calls to attach(): File ‘apollo/R/apollo_attach.R’: attach(as.list(apollo_beta), warn.conflicts = FALSE) attach(database, warn.conflicts = FALSE) attach(draws, warn.conflicts = FALSE) attach(randcoeff, warn.conflicts = FALSE) attach(lcpars, warn.conflicts = FALSE) See section ‘Good practice’ in ‘?attach’.