Package: birtRcpp
Type: Package
Title: BIvariate Response Time Modeling with 'Rcpp'
Version: 0.3.0
Authors@R: person("Jie-Wen", "Tsai", role = c("aut", "cre"), email = "tsai.jiewen@gmail.com")
Description: Item response and response time models fitted from their
        full conditionals. A built-in model is chosen with ecm(data,
        model = ...) or gibbs(data, model = ...): the two-parameter
        logistic model, alone or with log-normal response times (van
        der Linden, 2007, <doi:10.1007/s11336-006-1478-z>), latent
        regressions of ability and speed, cross-relations between
        ability and the log response times, and their quantile
        (asymmetric Laplace) versions. The main estimator is ECM
        (ecm(); Meng and Rubin, 1993, <doi:10.1093/biomet/80.2.267>):
        one conditional maximization per block of parameters,
        Polya-Gamma bounds for logistic likelihoods (Polson, Scott and
        Windle, 2013, <doi:10.1080/01621459.2013.829001>), adaptive or
        Bock-Aitkin quadrature (Bock and Aitkin, 1981,
        <doi:10.1007/BF02293801>) with normal-linear latent variables
        integrated exactly, and Louis' standard errors; quantile models
        maximize the asymmetric Laplace working likelihood, with
        sandwich standard errors. The same steps drive Gibbs sampling
        (gibbs(); conjugate updates and Metropolis-adjusted Langevin
        steps), with samplers in C++ ('RcppArmadillo') that port the
        'Julia' package 'ExtendedRtIrtModeling.jl' (its function names
        are kept as aliases). Both estimators have a check:
        check_ecm(), and check_sampler() with the Geweke (2004,
        <doi:10.1198/016214504000001132>) test and simulation-based
        calibration. equations() and algorithm() write out the model
        and every step, before or after fitting.
License: GPL-3
URL: https://github.com/jiewenTsai/birtRcpp,
        https://github.com/jiewenTsai/birtExamples
BugReports: https://github.com/jiewenTsai/birtRcpp/issues
Encoding: UTF-8
Depends: R (>= 4.1.0)
Imports: Rcpp (>= 1.0.10), coda, dplyr, purrr, stats, statmod, tibble,
        utils, graphics, grDevices
LinkingTo: Rcpp, RcppArmadillo
Suggests: testthat (>= 3.1.7), withr, knitr, rmarkdown, loo,
        strucchange, sandwich, posterior, LNIRT
VignetteBuilder: knitr
Config/testthat/edition: 3
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.2
Repository: https://jiewentsai.r-universe.dev
Date/Publication: 2026-10-29 10:35:20 UTC
RemoteUrl: https://github.com/jiewenTsai/birtRcpp
RemoteRef: HEAD
RemoteSha: fa2e3dc270d1bc47d98979efcbfcb071f010918a
NeedsCompilation: yes
Packaged: 2026-10-31 18:57:10 UTC; root
Author: Jie-Wen Tsai [aut, cre]
Maintainer: Jie-Wen Tsai <tsai.jiewen@gmail.com>