observation-driven model;
Poisson valued time series;
D O I:
10.1007/s11009-005-1480-4
中图分类号:
O21 [概率论与数理统计];
C8 [统计学];
学科分类号:
020208 [统计学];
070103 [概率论与数理统计];
0714 [统计学];
摘要:
This paper is concerned with an observation-driven model for time series of counts whose conditional distribution given past observations follows a Poisson distribution.This class of models is capable of modeling a wide range of dependence structures and is readily estimated using an approximation to the likelihood function. Recursive formulae for carrying out maximum likelihood estimation are provided and the technical components required for establishing a central limit theorem of the maximum likelihood estimates are given in a special case.