Package: bigIRT Title: Item Response Theory for Large Sparse Data Version: 0.2.0 Authors@R: person(given = "Charles", family = "Driver", role = c("aut", "cre"), email = "charles.driver@psychologie.uzh.ch", comment = c(ORCID = "0000-0002-4174-2970")) Description: Fits binary item response theory (IRT) models for large and sparse data in long format, by marginal maximum likelihood with a Laplace approximation to the integral over person abilities, or by the joint posterior mode over items and persons. Supports 1PL to 4PL models, multidimensional and confirmatory loading structures with an estimated latent correlation, covariate effects on ability and on each item parameter, empirical-Bayes prior adaptation, and post-estimation tools for information, reliability, item fit, held-out prediction and simulation. License: MIT + file LICENSE Encoding: UTF-8 Roxygen: list(markdown = TRUE) Depends: R (>= 3.5.0), data.table Imports: Matrix, methods, mize, Rcpp (>= 0.12.0), RcppParallel (>= 5.0.1), splines LinkingTo: Rcpp (>= 0.12.0), RcppEigen (>= 0.3.3.3.0), RcppParallel (>= 5.0.1) Suggests: broom, ggplot2, loo, mirt, testthat, knitr, rmarkdown, sandwich, strucchange VignetteBuilder: knitr SystemRequirements: GNU make URL: https://github.com/cdriveraus/bigIRT BugReports: https://github.com/cdriveraus/bigIRT/issues Config/roxygen2/version: 8.1.0 Config/pak/sysreqs: cmake make Repository: https://cdriveraus.r-universe.dev Date/Publication: 2026-10-10 09:55:55 UTC RemoteUrl: https://github.com/cdriveraus/bigIRT RemoteRef: HEAD RemoteSha: 7eef27fe82a37aeb0ae532f254c48eb7bdd433a5 NeedsCompilation: yes Packaged: 2026-10-12 16:03:36 UTC; root Author: Charles Driver [aut, cre] (ORCID: ) Maintainer: Charles Driver