Nuclear Norm Penalized Regression R package NNPreg version 0.1.0 Fits nuclear norm penalized multivariate linear regression models using the fast iterative shrinkage-thresholding algorithm (FISTA) of Beck and Teboulle (2009) <doi:10.1137/080716542>. Provides fixed-penalty estimation, regularization paths, K-fold cross-validation, prediction, coefficient extraction, and diagnostic plots. Software Imports: graphics, stats Suggests: testthat (>= 3.0.0) Mayukh Choudhury <mayukh.iitb@gmail.com> Comprehensive R Archive Network (CRAN) Mayukh Choudhury [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=NNPreg/LICENSE) 2026-11-08 application/tgz https://CRAN.R-project.org/package=NNPreg doi:10.32614/CRAN.package.NNPreg