Zero-inflated count models have received considerable amount of attention in recent years, fuelled by their widespread applications in many scientific disciplines. In this paper, we consider the problem of selecting grouped variables in zero-inflated Poisson (ZIP) models via group bridge regularization....
This paper discusses a class of Markov zero-inflated Poisson regression models for a time series of counts with the presence of excess zero relative to a Poisson distribution, in which the frequency distribution changes according to an underlying two-state Markov chain. Features of the proposed mod...
内容提示: Czado, Erhardt, Min:Zero-inflated generalized Poisson models withregression effects on the mean, dispersion andzero-inflation level applied to patent outsourcing ratesSonderforschungsbereich 386, Paper 482 (2006)Online unter: http://epub.ub.uni-muenchen.de/Projektpartner 文档格式:PDF | ...
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 caused ...
The generalized Poisson regression model has been used to model dispersed count data. It is a good competitor to the negative binomial re- gression model when the count data is over-dispersed. Zero-inflated Poisson and zero-inflated negative binomial regression models have been proposed for the si...
N. Poisson, Poisson-Gamma, and Zero-Inflated Regression Models of Motor Vehicle Crashes: Balancing Statistical Fit and Theory. Accident Analysis & Prevention... Y Xie,Y Zhang - 《Transportation Research Record》 被引量: 1发表: 2018年 FREQUENTIST AND BAYESIAN ZERO-INFLATED REGRESSION MODELS ON INS...
Testing the lack-of-fit of zero-inflated Poisson regression models. Communications in Statistics - Simulation and Computation 40:497-510.Li C (2011), Testing the Lack-of-fit of Zero-inflated Poisson Regression Models, Communications in Statistics - Simulation and Computation, Vol.40, 497-510....
BIOMETRICS56,1030-1039December2000Zero-InflatedPoissonandBinomialRegressionwithRandomEffects:ACaseStudyDanielB.HallDepartmentofStatistics,UniversityofGeorgia,Athens,Georgia30602-1952,U.S.A.ernail:dhall@stat.uga.eduSUMMARY.Ina1992Technometrzcspaper,Lambert(1992,34,1-14)describedzero-inflatedPoisson(ZIP)regres...
However, if the data continue to suggest additional overdispersion, zero-inflated negative binomial (ZINB) and zero-inflated generalized Poisson (ZIGP) regression models have been considered as alternatives. This study proposes the score test for testing ZIP regression model against ZIGP alternatives ...
RE: st: Zero Inflated Poisson Regression From: "Scott Holupka" <Scott.Holupka@jhu.edu> References: st: Zero Inflated Poisson Regression From: "Scott Holupka" <Scott.Holupka@jhu.edu> Prev by Date: Re: st: Loop-within-loop error while looping over observations for a microsimulation ...