L1Packv2: A Mathematica package for minimizing an ℓ 1 -penalized functional

Abstract L1Packv2 is a Mathematica package that contains a number of algorithms that can be used for the minimization of an ℓ_1 -penalized least squares functional. The algorithms can handle a mix of penalized and unpenalized variables. Several instructive examples are given. Also, an implementation that yields an exact output whenever exact data are given is provided. Title of program: L1Packv2.m Catalogue Id: AEBP_v1_0 Nature of problem Minimization of L 1 -penalized least squares functionals Versions of this program held in the CPC repository in Mendeley Data AEBP_v1_0; L1Packv2.m; 10.1016/j.cpc.2008.07.010 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)