bizicount: Bivariate Zero-Inflated Count Models Using Copulas
Maximum likelihood estimation of copula-based zero-inflated (and non-inflated) Poisson and negative binomial count models, based on the article <doi:10.18637/jss.v109.i01>. Supports Frank and Gaussian copulas. Allows for mixed margins (e.g., one margin Poisson, the other zero-inflated negative binomial), and several marginal link functions. Built-in methods for publication-quality tables using 'texreg', post-estimation diagnostics using 'DHARMa', and testing for marginal zero-modification via <doi:10.1177/0962280217749991>. For information on copula regression for count data, see Genest and Nešlehová (2007) <doi:10.1017/S0515036100014963> as well as Nikoloulopoulos (2013) <doi:10.1007/978-3-642-35407-6_11>. For information on zero-inflated count regression generally, see Lambert (1992) <https://www.jstor.org/stable/1269547>. The author acknowledges support by NSF DMS-1925119 and DMS-212324.
| Version: | 1.3.4 |
| Depends: | R (≥ 4.1.0) |
| Imports: | pbivnorm (≥ 0.6.0),Formula (≥ 1.2-4),rlang (≥ 0.4.7),MASS (≥ 7.3-54),numDeriv (≥ 2016.8-1.1), methods, stats, utils,DHARMa (≥ 0.3.4),texreg (≥ 1.37.5) |
| Suggests: | covr,testthat (≥ 3.0.0) |
| Published: | 2025-08-20 |
| DOI: | 10.32614/CRAN.package.bizicount |
| Author: | John Niehaus [aut, cre] |
| Maintainer: | John Niehaus <jniehaus2257 at gmail.com> |
| BugReports: | https://github.com/jmniehaus/bizicount/issues |
| License: | GPL (≥ 3) |
| URL: | https://github.com/jmniehaus/bizicount |
| NeedsCompilation: | no |
| Citation: | bizicount citation info |
| Materials: | README,NEWS |
| CRAN checks: | bizicount results |
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