Klein, Nadja; Kneib, Thomas; Lang, Stefan - Institut für Finanzwissenschaft, Fakultät für … - 2013
Frequent problems in applied research that prevent the application of the classical Poisson log-linear model for … analyzing count data include overdispersion, an excess of zeros compared to the Poisson distribution, correlated responses, as … specified for several parameters of a count data distribution. As special instances, we consider the zero-inflated Poisson, the …