Simulate data according to BG/NBD model assumptions
bgnbd.GenerateData(n, T.cal, T.star, params, return.elog = FALSE)number of customers
length of calibration period
length of holdout period
BG/NBD parameters - a vector with r, alpha, a and
b in that order.
boolean - if TRUE then the event log is returned in
addition to the CBS summary
list with elements cbs and elog containing data.frames