Package: irtoys
Type: Package
Title: A Collection of Functions Related to Item Response Theory (IRT)
Version: 0.2.2
Date: 2022-05-11
Authors@R: c(person("Ivailo", "Partchev", email = "partchev@gmail.com", role = c("aut","cre")), 
  person("Gunter", "Maris", email = "Gunter.Maris@act.org", role = "aut"),
  person("Tamaki", "Hattori", role = "ctb"))
Maintainer: Ivailo Partchev <partchev@gmail.com>
Description: A collection of functions useful in learning and
        practicing IRT, which can be combined into larger programs.
        Provides basic CTT analysis, a simple common interface to the
        estimation of item parameters in IRT models for binary
        responses with three different programs (ICL, BILOG-MG, and
        ltm), ability estimation (MLE, BME, EAP, WLE, plausible
        values), item and person fit statistics, scaling methods (MM,
        MS, Stocking-Lord, and the complete Hebaera method), and a rich
        array of parametric and non-parametric (kernel) plots.
        Estimates and plots Haberman's interaction model when all items
        are dichotomously scored.
LazyLoad: yes
LazyData: yes
License: GPL (>= 2)
Depends: sm, ltm
Suggests: MASS, knitr, rmarkdown
Collate: 'ability.R' 'estimate.R' 'itemfit.R' 'nonpar.R' 'readin.R'
        'scale.R' 'tracelines.R' 'utils.R' 'irtoys-package.R'
        'interaction.R'
VignetteBuilder: knitr
RoxygenNote: 7.1.1
NeedsCompilation: yes
Packaged: 2026-10-09 08:11:15 UTC; root
Author: Ivailo Partchev [aut, cre], Gunter Maris [aut], Tamaki Hattori
        [ctb]
Repository: https://irtools.r-universe.dev
Date/Publication: 2022-05-12 08:50:02 UTC
RemoteUrl: https://github.com/cran/irtoys
RemoteRef: HEAD
RemoteSha: a0364e6d4434c69b5ffa32205b0e38a65e5bccd3