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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 "fibr" in publications use:'
type: software
license: MIT
title: 'fibr: Prior-Fraction Diagnostics for Hierarchical Models'
version: 0.1.1
doi: 10.5281/zenodo.20724550
abstract: Computes the prior fraction, the per-group pooling or shrinkage factor,
  for hierarchical models, including directly from 'brms' fits. For each group-level
  coefficient the prior fraction is the share of the posterior precision contributed
  by the shrinkage prior relative to the likelihood; values near one indicate a coefficient
  that is prior-dominated (the centring/non-centring funnel regime), values near zero
  indicate a likelihood-dominated coefficient that is well identified from the data.
  These quantities are invisible to standard convergence diagnostics such as R-hat
  and effective sample size, and they indicate where a non-centred reparameterisation
  is likely to help. A companion advisor reports the same decomposition for changepoint
  random effects fitted with 'smoothbp'. The underlying geometry (the Fisher-metric
  connection on the base-fiber split, for which this connection is flat so the obstruction
  is statistical rather than geometric) is described in Bindoff (2026) <https://doi.org/10.5281/zenodo.20724550>;
  code reproducing the paper is in the package's source repository.
authors:
- family-names: Bindoff
  given-names: Aidan D
  email: aidan.bindoff@utas.edu.au
  orcid: https://orcid.org/0000-0002-0943-2702
preferred-citation:
  type: generic
  title: 'A Flat Connection: The Prior Fraction and the Geometry of Centring in Hierarchical
    MCMC'
  authors:
  - family-names: Bindoff
    given-names: Aidan D.
    email: aidan.bindoff@utas.edu.au
    orcid: https://orcid.org/0000-0002-0943-2702
  year: '2026'
  doi: 10.5281/zenodo.20724550
  url: https://doi.org/10.5281/zenodo.20724550
  notes: fibr R package version 0.1.1
repository: https://cran.r-universe.dev
repository-code: https://github.com/ABindoff/fibr
commit: 83c8634cd610785ce2bc8cc4e6e887ad29c7185a
url: https://doi.org/10.5281/zenodo.20724550
date-released: '2026-06-29'
contact:
- family-names: Bindoff
  given-names: Aidan D
  email: aidan.bindoff@utas.edu.au
  orcid: https://orcid.org/0000-0002-0943-2702