Martingales and first passage times of AR(1) sequences

被引:18
作者
Novikov, Alexander [1 ]
Kordzakhia, Nino [2 ]
机构
[1] Univ Technol Sydney, Dept Math Sci, Sydney, NSW 2007, Australia
[2] Macquarie Univ, Dept Stat, Sydney, NSW 2109, Australia
关键词
first passage times; autoregressive processes; martingales; exponential boundedness;
D O I
10.1080/17442500701840885
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Using the martingale approach we find sufficient conditions for exponential boundedness of first passage times over a level for ergodic first order autoregressive sequences. Further, we prove a martingale identity to be used in obtaining explicit bounds for the expectation of first passage times.
引用
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页码:197 / 210
页数:14
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