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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 "cldreducer" in publications use:'
type: software
license: MIT
title: 'cldreducer: Reduce Compact Letter Displays'
version: 0.3.5
identifiers:
- type: doi
  value: 10.32614/CRAN.package.cldreducer
abstract: Reduces compact letter displays (CLDs) of all pairwise comparisons. A CLD
  gives two groups a common letter exactly when they are not significantly different.
  The package finds a display with the fewest letter assignments or distinct letters
  that keeps every relationship. The optional CLD-sigma objective is the assignment-minimum
  clique covering problem of Ennis, Fayle, and Ennis (2012) <https://doi.org/10.1145/2133803.2275596>,
  solved as a mixed-integer linear program with 'HiGHS'. The default CLD-C method
  selects full maximal cliques with the fewest letters. Among displays with the selected
  minimum objective, it returns one fixed canonical display, so the result does not
  depend on the solver. The package includes the wheat yield example of Piepho (2004)
  <https://doi.org/10.1198/1061860043515>.
authors:
- family-names: Ennis
  given-names: John
  email: john.m.ennis@aigora.com
preferred-citation:
  type: manual
  title: 'cldreducer: Reduce Compact Letter Displays'
  authors:
  - family-names: Ennis
    given-names: John
    email: john.m.ennis@aigora.com
  year: '2026'
  notes: R package version 0.3.5
  url: https://github.com/aigorahub/cld-reducer
repository: https://aigorahub.r-universe.dev
repository-code: https://github.com/aigorahub/cld-reducer
commit: b32c42fbcc37bce8c70b3a40887b3c4e0e178abf
url: https://github.com/aigorahub/cld-reducer
date-released: '2026-10-20'
contact:
- family-names: Ennis
  given-names: John
  email: john.m.ennis@aigora.com
references:
- type: article
  title: Assignment-Minimum Clique Coverings
  authors:
  - family-names: Ennis
    given-names: John M.
  - family-names: Fayle
    given-names: Charles M.
  - family-names: Ennis
    given-names: Daniel M.
  journal: ACM Journal of Experimental Algorithmics
  volume: '17'
  notes: Article 1.5
  year: '2012'
  doi: 10.1145/2133803.2275596