# ------------------------------------------------
# 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 "PP" in publications use:'
type: software
license: GPL-3.0-only
title: 'PP: Person Parameter Estimation'
version: 1.0.0
doi: 10.32614/CRAN.package.PP
identifiers:
- type: doi
  value: 10.32614/CRAN.package.PP
abstract: 'Estimation of person parameters (abilities) for the 1, 2, 3 and 4 parameter
  logistic model, the (generalized) partial credit model and tests that mix dichotomous
  and polytomous items, under the assumption that the item parameters are known and
  fixed: maximum likelihood, weighted likelihood (Warm, 1989 <https://doi.org/10.1007/BF02294627>),
  maximum and expected a posteriori and robust estimation (Schuster and Yuan, 2011
  <https://doi.org/10.3102/1076998610396890>). Further features are jackknife estimates
  (Wainer and Wright, 1980 <https://doi.org/10.1007/BF02293910>), plausible values,
  the person fit statistics lz, lz* (Snijders, 2001 <https://doi.org/10.1007/BF02294437>),
  infit and outfit, and the simulation of response data. Models fitted with the ''eRm''
  package can be passed on directly. The package is useful, e.g., when items of an
  item bank are given to a new sample of persons.'
authors:
- family-names: Reif
  given-names: Manuel
  email: manuel.reif@gmail.com
- family-names: Steinfeld
  given-names: Jan
  email: jan.d.steinfeld@gmail.com
  orcid: https://orcid.org/0000-0001-9853-8260
preferred-citation:
  type: manual
  title: 'PP: Person Parameter Estimation'
  authors:
  - family-names: Reif
    given-names: Manuel
    email: manuel.reif@gmail.com
  - family-names: Steinfeld
    given-names: Jan
    email: jan.d.steinfeld@gmail.com
    orcid: https://orcid.org/0000-0001-9853-8260
  year: '2026'
  notes: R package version 1.0.0
  doi: 10.32614/CRAN.package.PP
  url: https://github.com/manuelreif/PP
repository: https://manuelreif.r-universe.dev
repository-code: https://github.com/manuelreif/PP
commit: 4073f999118227e1773b4ebd73d4bc68d7acfb07
url: https://manuelreif.github.io/PP/
date-released: '2026-10-14'
contact:
- family-names: Reif
  given-names: Manuel
  email: manuel.reif@gmail.com