Jeremy Loscheider stochastic1
jdmaturen
/ bg_nbd.py
Created
October 16, 2013 05:36
Implementation of the beta-geometric/NBD (BG/NBD) model from '"Counting Your Customers" the Easy Way: An Alternative to
the Pareto/NBD Model' (Fader, Hardie and Lee 2005) http://brucehardie.com/papers/018/fader_et_al_mksc_05.pdf and
accompanying technical note http://www.brucehardie.com/notes/004/
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| """ | |
| Implementation of the beta-geometric/NBD (BG/NBD) model from '"Counting Your Customers" the Easy Way: An Alternative to | |
| the Pareto/NBD Model' (Fader, Hardie and Lee 2005) http://brucehardie.com/papers/018/fader_et_al_mksc_05.pdf and | |
| accompanying technical note http://www.brucehardie.com/notes/004/ | |
| Apache 2 License | |
| """ | |
| from math import log, exp | |
| import numpy as np |