Identification and Estimation using Group Testing R package binGroup2 version 1.3.4 Methods for the group testing identification problem: 1) Operating characteristics (e.g., expected number of tests) for commonly used hierarchical and array-based algorithms, and 2) Optimal testing configurations for these same algorithms. Methods for the group testing estimation problem: 1) Estimation and inference procedures for an overall prevalence, and 2) Regression modeling for commonly used hierarchical and array-based algorithms. Software Imports: ggplot2, graphics, grDevices, partitions, rBeta2009, Rcpp (>= 1.0.0), Rdpack, scales, stats, utils LinkingTo: Rcpp, RcppArmadillo Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Brianna Hitt <brianna.hitt@afacademy.af.edu> Comprehensive R Archive Network (CRAN) Brianna Hitt [aut, cre] (ORCID: <https://orcid.org/0000-0002-0645-0067>), Christopher Bilder [aut] (ORCID: <https://orcid.org/0000-0002-2848-8576>), Frank Schaarschmidt [aut] (ORCID: <https://orcid.org/0000-0002-6599-3803>), Brad Biggerstaff [aut] (ORCID: <https://orcid.org/0000-0002-3105-3530>), Christopher McMahan [aut] (ORCID: <https://orcid.org/0000-0001-5056-9615>), Joshua Tebbs [aut] (ORCID: <https://orcid.org/0000-0002-6762-7241>), Boan Zhang [ctb], Michael Black [ctb], Peijie Hou [ctb], Peng Chen [ctb], Minh Nguyen [ctb] GPL (>= 3) 2026-09-17 application/tgz https://CRAN.R-project.org/package=binGroup2 doi:10.32614/CRAN.package.binGroup2