Regularization in Cox Frailty Models R package PenCoxFrail version 2.0.1 CRAN Task View: Survival (https://CRAN.R-project.org/view=Survival) Different regularization approaches for Cox Frailty Models by penalization methods are provided. see Groll et al. (2017) <doi:10.1111/biom.12637> for effects selection. See also Groll and Hohberg (2024) <doi:10.1002/bimj.202300020> for classical LASSO approach. Software Depends: survival Imports: Rcpp (>= 0.11.6), Matrix, methods, coxme LinkingTo: Rcpp, RcppArmadillo Suggests: mgcv Andreas Groll <groll@statistik.tu-dortmund.de> Comprehensive R Archive Network (CRAN) Andreas Groll [aut, cre] GPL (>= 2) 2025-12-22 application/tgz https://CRAN.R-project.org/package=PenCoxFrail doi:10.32614/CRAN.package.PenCoxFrail