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Ergodicity conditions for a double mixed Poisson autoregression
Journal article   Peer reviewed

Ergodicity conditions for a double mixed Poisson autoregression

Abdelhakim Aknouche and Nacer Demmouche
Statistics & probability letters, Vol.147, pp.6-11
04/2019

Abstract

Contraction in mean Double mixed Poisson autoregression Ergodicity Markov Switching INGARCH Negative binomial mixture INGARCH Weak dependence
We propose a double mixed Poisson autoregression in which the intensity, scaled by a unit mean independent and identically distributed (i.i.d.) mixing process, has different regime specifications according to the state of a finite unobserved i.i.d. chain. Under some contraction in mean conditions, we show that the proposed model is strictly stationary and ergodic with a finite mean. Applications to various count time series models are given.

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