Adaptive Double Sparse Iterative Hard Thresholding R package ADSIHT version 0.2.1 Solving high-dimensional double sparse linear regression via an iterative hard thresholding algorithm. Furthermore, the method is extended to jointly estimate multiple graphical models. For more details, please see <https://www.jmlr.org/papers/v25/23-0653.html> and <doi:10.48550/arXiv.2503.18722>. Software Depends: R (>= 4.1.0) Imports: Matrix, mvnfast, Rcpp, purrr, snowfall LinkingTo: Rcpp, RcppEigen Suggests: knitr, rmarkdown, testthat Yanhang Zhang <zhangyh98@tsinghua.edu.cn> Comprehensive R Archive Network (CRAN) Yanhang Zhang [aut, cre], Zhifan Li [aut], Jianxin Yin [aut], Shixiang Liu [aut], Lingren Kong [aut] GPL (>= 3) 2025-11-28 application/tgz https://CRAN.R-project.org/package=ADSIHT doi:10.32614/CRAN.package.ADSIHT en-GB