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# CITATION.cff file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "underdisp" in publications use:'
type: software
license: GPL-3.0-only
title: 'underdisp: Diagnostics and Models for Underdispersed Count Data'
version: 0.1.2
identifiers:
- type: doi
  value: 10.32614/CRAN.package.underdisp
- type: url
  value: https://bagozzib.github.io/underdisp/
abstract: Tools for detecting and modeling underdispersion in count data (conditional
  variance below the conditional mean), the case the Poisson and negative binomial
  defaults cannot represent. Provides a screening diagnostic that benchmarks at-risk
  dispersion against a zero-truncated Poisson, regression-adjusted tests of equidispersion,
  and a dispersion profile that compares the variance-to-mean curves of competing
  families against the data; the continuous parameter binomial (CPB) and generalized
  event count (Katz) regressions with zero-truncated, hurdle, and zero-inflated forms
  and high-dimensional fixed effects with a split-panel jackknife bias correction;
  matched Poisson, negative binomial, COM-Poisson (rate- and mean-parameterized),
  generalized Poisson, gamma-count, and double Poisson regressions through the same
  interface, with frequency weights, offsets, and analytic, robust, and cluster-robust
  standard errors; bootstrap and profile-likelihood inference; proper scoring rules,
  rootograms, PIT histograms, and simulation methods; and quantities of interest including
  predicted distributions, the implied ceiling, rate ratios, and first differences
  with an extensive/intensive decomposition. The likelihoods are implemented in C++.
authors:
- family-names: Bagozzi
  given-names: Benjamin E.
  email: bagozzib@udel.edu
  orcid: https://orcid.org/0000-0002-6233-6453
preferred-citation:
  type: manual
  title: 'underdisp: Diagnostics and Models for Underdispersed Count Data'
  authors:
  - family-names: Bagozzi
    given-names: Benjamin E.
    email: bagozzib@udel.edu
    orcid: https://orcid.org/0000-0002-6233-6453
  year: '2026'
  notes: R package version 0.1.1
  url: https://CRAN.R-project.org/package=underdisp
repository: https://bagozzib.r-universe.dev
repository-code: https://github.com/bagozzib/underdisp
commit: 57c08fe0705a4f3b7c13eaf68c599a5d7ecfb530
url: https://CRAN.R-project.org/package=underdisp
date-released: '2026-09-30'
contact:
- family-names: Bagozzi
  given-names: Benjamin E.
  email: bagozzib@udel.edu
  orcid: https://orcid.org/0000-0002-6233-6453
references:
- type: unpublished
  title: Revisiting underdispersion in political science
  authors:
  - family-names: Bagozzi
    given-names: Benjamin E.
  year: '2026'
  notes: Working paper