Zipf Extended Distributions
Implementation of three extensions of the Zipf distribution: the Marshall-Olkin
Extended Zipf (MOEZipf) Pérez-Casany, M., & Casellas, A. (2013) <1304.4540>, the Zipf-Poisson Extreme (Zipf-PE) and the
Zipf-Poisson Stopped Sum (Zipf-PSS) distributions.
In log-log scale, the two first extensions allow for top-concavity
and top-convexity while the third one only allows for top-concavity.
All the extensions maintain the linearity associated with the Zipf model in the tail.1304.4540>