Robust Instrumental Variable Methods in Linear Models R package RobustIV version 0.3.1 Inference for the treatment effect with possibly invalid instrumental variables via TSHT ('Guo et al.' (2018) <doi:10.1111/rssb.12275>) and SearchingSampling ('Guo' (2023) <doi:10.1093/jrsssb/qkad049>), which are effective for both low- and high-dimensional covariates and instrumental variables; test of endogeneity in high dimensions ('Guo et al.' (2018) <doi:10.1016/j.jeconom.2018.07.002>). Software Depends: R (>= 2.10) Imports: glmnet, MASS, Matrix, igraph, intervals, CVXR Zijian Guo <zijguo@stat.rutgers.edu> Comprehensive R Archive Network (CRAN) Taehyeon Koo [aut], Zhenyu Wang [aut], Hyunseung Kang [ctb], Dylan Small [ctb], Zijian Guo [aut, cre, cph] GPL-3 2026-03-29 application/tgz https://CRAN.R-project.org/package=RobustIV doi:10.32614/CRAN.package.RobustIV