Search Results - subject:"zero-inflated generalized Poisson regression"

Zero-inflated generalized Poisson models with regression effects on the mean, dispersion and zero-inflation level applied to patent outsourcing rates

Czado, Claudia; Erhardt, Vinzenz; Min, Aleksey - 2006

This paper focuses on an extension of zero-inflated generalized Poisson (ZIGP) regression models for count data. We discuss generalized Poisson (GP) models where dispersion is modelled by an additional model parameter. Moreover, zero-inflated models in which overdispersion is assumed to be...

Persistent link: https://www.econbiz.de/10010266132

Consistency and asymptotic normality of the maximum likelihood estimator in a zero-inflated generalized Poisson regression

Czado, Claudia; Min, Aleksey - 2005

prove consistency and asymptotic normality of a solution to the maximum likelihood equations for zero-inflated generalized … Poisson regression models. Further the accuracy of the asymptotic normality approximation is investigated through a simulation …

Persistent link: https://www.econbiz.de/10010272318