Version: 1.1.0
Type: Package
Title: Fractional Response Regressions
Package: fracreg
Authors@R: person(given = c("Sulman", "Olieko"),
                   family = "Owili",
                   role = c("aut", "cre"),
                   email = "oliekosulman@gmail.com",
                   comment = c(ORCID = "0000-0001-7401-5326"))
License: GPL-3
Description: Provides routines for the estimation and specification
        analysis of fractional response models. Includes univariate
        one-part, two-part, and double-inflated three-part fractional
        models. Further incorporates estimators for panel data settings
        and addresses unobserved heterogeneity and endogeneity via
        correlated random effects and control function approaches.
        Extends fractional methodology to multivariate data via
        fractional multinomial logit models and handles
        high-dimensional multicollinear data via fractional ridge
        regression. Calculates analytical partial effects across all
        model types and includes generalised
        goodness-of-functional-form (GGOFF) and Regression Equation
        Specification Error Test (RESET) hypothesis tests. Methods are
        described in Papke and Wooldridge (1996)
        <doi:10.1002/(SICI)1099-1255(199611)11:6%3C619::AID-JAE418%3E3.0.CO;2-1>,
        Papke and Wooldridge (2008)
        <doi:10.1016/j.jeconom.2008.05.009>, Buis (2008)
        <http://maartenbuis.nl/software/likelihoodFmlogit.pdf>,
        Ramalho, Ramalho and Murteira (2011)
        <doi:10.1111/j.1467-6419.2009.00602.x>, Fang and Ma (2013)
        <doi:10.1080/02664763.2012.758246>, Mullahy (2015)
        <doi:10.1515/jem-2012-0006>, Murteira and Ramalho (2016)
        <doi:10.1080/07474938.2013.806849>, and Rokem and Kay (2020)
        <doi:10.1093/gigascience/giaa133>.
Language: en-GB
Date: 2026-08-08
Packaged: 2026-10-07 11:59:09 UTC; root
NeedsCompilation: no
URL: https://sulmanolieko.github.io/fracreg/
Depends: R (>= 3.5.0)
Imports: stats, maxLik, ggplot2, grid, MASS
Suggests: knitr, rmarkdown, testthat (>= 3.0.0), tibble, gtsummary
VignetteBuilder: knitr
RoxygenNote: 7.3.3
Config/testthat/edition: 3
Encoding: UTF-8
Repository: https://sulmanolieko.r-universe.dev
Date/Publication: 2026-08-08 15:48:14 UTC
RemoteUrl: https://github.com/sulmanolieko/fracreg
RemoteRef: HEAD
RemoteSha: 13015e2cb95b809f0cc375090a8d1fcedbf54a53
Author: Sulman Olieko Owili [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-7401-5326>)
Maintainer: Sulman Olieko Owili <oliekosulman@gmail.com>