BTYD (version 2.4)

pnbd.PlotTransactionRateHeterogeneity: Pareto/NBD Plot Transaction Rate Heterogeneity

Description

Plots and returns the estimated gamma distribution of lambda (customers' propensities to purchase).

Usage

pnbd.PlotTransactionRateHeterogeneity(params, lim = NULL)

Arguments

params

Pareto/NBD parameters - a vector with r, alpha, s, and beta, in that order. r and alpha are unobserved parameters for the NBD transaction process. s and beta are unobserved parameters for the Pareto (exponential gamma) dropout process.

lim

upper-bound of the x-axis. A number is chosen by the function if none is provided.

Value

Distribution of customers' propensities to purchase.

Details

This returns the distribution of each customer's Poisson parameter, which determines the level of their purchasing (using the Pareto/NBD assumption that purchasing on the individual level can be modeled with a Poisson distribution).

Examples

params <- c(0.55, 10.56, 0.61, 11.64)
pnbd.PlotTransactionRateHeterogeneity(params)
params <- c(3, 10.56, 0.61, 11.64)
pnbd.PlotTransactionRateHeterogeneity(params)