Returns the number of transactions that a randomly chosen customer (for whom we have no prior information) is expected to make in the first n transaction opportunities.
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.
number of transaction opportunities; may also be a vector.
E(X(n) | alpha, beta, gamma, delta)
Mean of the BG/BB probability mass function.
Fader, Peter S., Bruce G.S. Hardie, and Jen Shang. "Customer-Base Analysis in a Discrete-Time Noncontractual Setting." Marketing Science 29(6), pp. 1086-1108. 2010. INFORMS. Web.
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Loading required package: hypergeo  3.16499  0.4973166 0.9207078 1.2927317 1.6266289 1.9309062 2.2113893 2.4722624  2.7166434 2.9469256 3.1649902
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