Implementing BTYD Models with the Log Sum Exp Patch R package BTYD version 2.4.3 Functions for data preparation, parameter estimation, scoring, and plotting for the BG/BB (Fader, Hardie, and Shang 2010 <doi:10.1287/mksc.1100.0580>), BG/NBD (Fader, Hardie, and Lee 2005 <doi:10.1287/mksc.1040.0098>) and Pareto/NBD and Gamma/Gamma (Fader, Hardie, and Lee 2005 <doi:10.1509/jmkr.2005.42.4.415>) models. Software Depends: R(>= 3.5), hypergeo, optimx, dplyr Imports: Matrix Suggests: knitr, rmarkdown Gabi Huiber <ghuiber@gmail.com> Comprehensive R Archive Network (CRAN) Lukasz Dziurzynski [aut], Edward Wadsworth [aut], Peter Fader [ctb], Elea McDonnell Feit [ctb], Daniel McCarthy [aut, ctb], Bruce Hardie [ctb], Arun Gopalakrishnan [ctb], Eric Schwartz [ctb], Yao Zhang [ctb], Gabi Huiber [ctb, cre] GPL-3 2021-11-17 application/tgz https://CRAN.R-project.org/package=BTYD doi:10.32614/CRAN.package.BTYD