vec_gsl_hyp2f1_e

<p>Calculate the hypergeometric 2f1 using the GSL library (gsl_sf_hyperg_2F1_e)</p>

internal

Probabilistic latent customer attrition models (also known as "buy-'til-you-die models") are used to
predict future purchase behavior of customers. This package includes fast and accurate implementations of various
probabilistic latent customer attrition models for non-contractual settings (e.g., retail business) with and
without time-invariant and time-varying covariates. Currently, the package includes the Pareto/NBD model
(Pareto/Negative-Binomial-Distribution) for the purchase and the attrition processes as well as the Gamma/Gamma model
for the spending process. For reference to the Pareto/NBD model, see Schmittlein DC, Morrison DG, Colombo R (1987) <doi:10.1287/mnsc.33.1.1>.
For reference to the Gamma/Gamma model, see Fader PS, Hardie BG, Lee K (2005) <doi:10.1509/jmkr.2005.42.4.415>.

Patrick Bachmann

CLVTools

Tools for Customer Lifetime Value Estimation

Jeffrey Naef

Patrik Schilter

Markus Meierer

Niels Kuebler

vec_gsl_hyp2f1_e function

GSL Hypergeom 2f1 for equal length vectors — vec_gsl_hyp2f1_e

GSL Hypergeom 2f1 for equal length vectors

vec_gsl_hyp2f1_e: GSL Hypergeom 2f1 for equal length vectors

Description

Usage

Arguments

Value