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# CITATION 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 "BTWAR" in publications use:'
type: software
license: GPL-3.0-only
title: 'BTWAR: Butterworth-Induced Autoregressive Model'
version: 1.0.1
doi: 10.3390/math14030479
identifiers:
- type: doi
  value: 10.32614/CRAN.package.BTWAR
abstract: Implements the Butterworth-Induced Autoregressive ('BTWAR') model, where
  autoregressive coefficients are obtained from analog Butterworth filter prototypes
  mapped into the discrete-time domain using the Matched Z-Transform. The framework
  establishes a structured connection between frequency-domain filter design and time-domain
  autoregressive modeling. Model order selection is performed via nested rolling-origin
  cross-validation. Method described in Bras-Geraldes, Rocha and Martins (2026) <https://doi.org/10.3390/math14030479>.
authors:
- family-names: Bras-Geraldes
  given-names: Carlos
  email: cgeraldes@gmail.com
- family-names: Rocha
  given-names: J. Leonel
preferred-citation:
  type: article
  title: Butterworth-Induced Autoregressive Model
  authors:
  - family-names: Brás-Geraldes
    given-names: Carlos
  - family-names: Rocha
    given-names: J. Leonel
  - family-names: Martins
    given-names: Filipe
  journal: Mathematics
  year: '2026'
  volume: '14'
  issue: '3'
  doi: 10.3390/math14030479
  start: '479'
repository: https://cgeraldes.r-universe.dev
repository-code: https://github.com/cgeraldes/BTWAR
commit: 1e0a5729450812c54fe90e37de14ca969562bf5a
url: https://doi.org/10.3390/math14030479
date-released: '2026-03-15'
contact:
- family-names: Bras-Geraldes
  given-names: Carlos
  email: cgeraldes@gmail.com