Probability Models for Customer-Base Analysis - …
Probability Models for Customer-Base Analysis Peter S. Fader University of Pennsylvania www.petefader.com Bruce G.S. Hardie London Business School www.brucehardie.com
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bgnbd spreadsheet note - Bruce Hardie
www.brucehardie.comLet us consider the first time point, t =1/7 (row 7).Looking at equation (1), the ‘z’ argument of the Gaussian hypergeometric function is t/(α + t); this is given in cell D7.
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