Package: sirt
Type: Package
Title: Supplementary Item Response Theory Models
Version: 4.3-21
Date: 2026-04-16 10:43:29
Authors@R: c( person(given = "Alexander",
                    family = "Robitzsch",
                    role = c("aut", "cre"),
                    email = "robitzsch@ipn.uni-kiel.de",
                    comment = c(ORCID = "0000-0002-8226-3132")) )
Maintainer: Alexander Robitzsch <robitzsch@ipn.uni-kiel.de>
Description: Supplementary functions for item response models aiming to
        complement existing R packages. The functionality includes
        among others multidimensional compensatory and noncompensatory
        IRT models (Reckase, 2009, <doi:10.1007/978-0-387-89976-3>),
        MCMC for hierarchical IRT models and testlet models (Fox, 2010,
        <doi:10.1007/978-1-4419-0742-4>), NOHARM (McDonald, 1982,
        <doi:10.1177/014662168200600402>), Rasch copula model (Braeken,
        2011, <doi:10.1007/s11336-010-9190-4>; Schroeders, Robitzsch &
        Schipolowski, 2014, <doi:10.1111/jedm.12054>), faceted and
        hierarchical rater models (DeCarlo, Kim & Johnson, 2011,
        <doi:10.1111/j.1745-3984.2011.00143.x>), ordinal IRT model
        (ISOP; Scheiblechner, 1995, <doi:10.1007/BF02301417>), DETECT
        statistic (Stout, Habing, Douglas & Kim, 1996,
        <doi:10.1177/014662169602000403>), local structural equation
        modeling (LSEM; Hildebrandt, Luedtke, Robitzsch, Sommer &
        Wilhelm, 2016, <doi:10.1080/00273171.2016.1142856>).
Depends: R (>= 3.5)
Imports: CDM, graphics, methods, parallel, pbapply, Rcpp, stats, TAM,
        utils
Suggests: coda, igraph, lavaan, MASS, Matrix, miceadds, minqa, mirt,
        mvtnorm, nloptr, optimx, pbivnorm, pbv, psych, sfsmisc, sm,
        survey
LinkingTo: pbv, Rcpp, RcppArmadillo
URL: https://github.com/alexanderrobitzsch/sirt,
        https://sites.google.com/view/alexander-robitzsch/software
License: GPL (>= 2)
Repository: https://alexanderrobitzsch.r-universe.dev
Date/Publication: 2026-04-16 09:01:10 UTC
RemoteUrl: https://github.com/alexanderrobitzsch/sirt
RemoteRef: HEAD
RemoteSha: 0a41c722b5788f279d77aa9757b51cffd32f860c
NeedsCompilation: yes
Packaged: 2026-06-24 04:14:09 UTC; root
Author: Alexander Robitzsch [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-8226-3132>)