pnbd.PlotTransactionRateHeterogeneity {BTYD}

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

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

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).

Value

Distribution of customers' propensities to purchase.

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)