Hierarchical Bayes BG-BB

Prob read this first (for Pareto/NBD)

• https://pdfs.semanticscholar.org/cd1e/e85ee334b74600309f777c10ba894ec6494b.pdf?_ga=2.222730779.1610769542.1584242010-2068282835.1584242010

Might be helpful:

• https://cran.r-project.org/web/packages/BTYDplus/vignettes/BTYDplus-HowTo.pdf
• https://github.com/mplatzer/BTYDplus