Evaluation of Algorithm Collections Using Item Response Theory R package airt version 0.2.2 An evaluation framework for algorithm portfolios using Item Response Theory (IRT). We use continuous and polytomous IRT models to evaluate algorithms and introduce algorithm characteristics such as stability, effectiveness and anomalousness (Kandanaarachchi, Smith-Miles 2020) <doi:10.13140/RG.2.2.11363.09760>. Software Depends: R (>= 3.4.0) Imports: pracma, mirt, tidyr, EstCRM, rlang, dplyr, magrittr, tibble, ggplot2, grDevices, RColorBrewer Suggests: knitr, rmarkdown, gridExtra, scales Sevvandi Kandanaarachchi <sevvandik@gmail.com> Comprehensive R Archive Network (CRAN) Sevvandi Kandanaarachchi [aut, cre] (ORCID: <https://orcid.org/0000-0002-0337-0395>) GPL-3 2023-08-08 application/tgz https://CRAN.R-project.org/package=airt doi:10.32614/CRAN.package.airt