Package: PP
Type: Package
Title: Person Parameter Estimation
Version: 1.0.0
Date: 2026-10-14
Authors@R: c(
    person(given = "Manuel",
           family = "Reif",
           email = "manuel.reif@gmail.com",
           role = c("cre", "aut")),
    person(given = "Jan",
           family = "Steinfeld",
           email = "jan.d.steinfeld@gmail.com",
           role = "aut",
           comment = c(ORCID = "0000-0001-9853-8260"))
    )
Description: 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 <doi:10.1007/BF02294627>),
    maximum and expected a posteriori and robust estimation (Schuster and
    Yuan, 2011 <doi:10.3102/1076998610396890>). Further features are
    jackknife estimates (Wainer and Wright, 1980 <doi:10.1007/BF02293910>),
    plausible values, the person fit statistics lz, lz* (Snijders, 2001
    <doi: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.
URL: https://github.com/manuelreif/PP, https://manuelreif.github.io/PP/
BugReports: https://github.com/manuelreif/PP/issues
License: GPL-3
LazyData: true
VignetteBuilder: knitr, rmarkdown
Depends: R (>= 4.0)
Encoding: UTF-8
Imports: graphics, Rcpp (>= 1.0.0), stats, tinyplot (>= 0.8.0), utils
LinkingTo: Rcpp
Suggests: testthat (>= 3.0.0), knitr, rmarkdown, eRm
NeedsCompilation: yes
Config/testthat/edition: 3
Config/roxygen2/version: 8.1.0
Packaged: 2026-10-14 15:29:20 UTC; manuel
Author: Manuel Reif [cre, aut],
  Jan Steinfeld [aut] (ORCID: <https://orcid.org/0000-0001-9853-8260>)
Maintainer: Manuel Reif <manuel.reif@gmail.com>
Repository: CRAN
Date/Publication: 2026-10-14 21:52:08 UTC
