Plots and returns the estimated beta distribution of P (customers' propensities to purchase).
BG/BB parameters - a vector with alpha, beta, gamma, and delta, in that order. Alpha and beta are unobserved parameters for the beta-Bernoulli transaction process. Gamma and delta are unobserved parameters for the beta-geometric dropout process.
This returns the distribution of each customer's Bernoulli parameter, which determines the level of their purchasing (using the BG/BB assumption that purchasing on the individual level can be modeled with a Bernoulli distribution).
Distribution of customers' propensities to purchase.
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