bgnbd.generalParams {BTYD}R Documentation

Define general parameters

Description

This is to ensure consistency across all functions that require common bits and bobs.

Usage

bgnbd.generalParams(params, func, x, t.x, T.cal, T.star = NULL, hardie = NULL)

Arguments

params

BG/NBD parameters - a vector with r, alpha, a, and b, in that order. r and alpha are unobserved parameters for the NBD transaction process. a and b are unobserved parameters for the Beta geometric dropout process.

func

function calling dc.InputCheck

x

number of repeat transactions in the calibration period T.cal, or a vector of transaction frequencies.

t.x

time of most recent repeat transaction, or a vector of recencies.

T.cal

length of calibration period, or a vector of calibration period lengths.

T.star

length of time for which we are calculating the expected number of transactions.

hardie

if TRUE, use h2f1 instead of hypergeo when you call this function from within bgnbd.ConditionalExpectedTransactions.

Value

a list with things you need for bgnbd.LL, bgnbd.PAlive and bgnbd.ConditionalExpectedTransactions

See Also

bgnbd.LL

bgnbd.PAlive

bgnbd.ConditionalExpectedTransactions


[Package BTYD version 2.4.3 Index]