Observation-driven models for Poisson counts
Poisson计数的观测驱动模型AI 解读 ↓
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Poisson计数的观测驱动模型AI 解读 ↓
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This paper is concerned with a general class of observation‐driven models for time series of counts whose conditional distributions given past observations and explanatory variables follow a Poisson distribution. These models provide a flexible framework for modelling a wide range of dependence structures. Conditions for stationarity and ergodicity of these processes are established from which the large‐sample properties of the maximum likelihood estimators can be derived. Simulations are provided to give additional insight into the finite‐sample behaviour of the estimators. Finally an application to a regression model for daily counts of asthma presentations at a Sydney hospital is described.