Non-homogeneous random walks on a semi-infinite strip
Non-homogeneous random walks on a semi-infinite strip
复制标题
半无限带上的非齐次随机游走
DOI:
10.1016/j.spa.2014.05.005
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发表时间:
2014
影响因子:
1.4
通讯作者:
Georgiou N
中科院分区:
文献类型:
--
作者:
Georgiou N
We study the asymptotic behaviour of Markov chains (X n, η n) on Z+× S, where Z+ is the non-negative integers and S is a finite set. Neither coordinate is assumed to be Markov. We assume a moments bound on the jumps of X n, and that, roughly speaking, η n is close to being Markov when X n is large. This departure from much of the literature, which assumes that η n is itself a Markov chain, enables us to probe precisely the recurrence phase transitions by assuming asymptotically zero drift for X n given η n. We give a recurrence classification in terms of increment moment parameters for X n and the stationary distribution for the large-X limit of η n. In the null case we also provide a weak convergence result, which demonstrates a form of asymptotic independence between X n (rescaled) and η n. Our results can be seen as generalizations of Lamperti’s results for non-homogeneous random walks on Z+(the case where S is a singleton). Motivation arises from modulated queues or processes with hidden variables where η n tracks an internal state of the system.
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DOI:
10.1007/bf01159257
发表时间:
1988
期刊:
Mathematical notes of the Academy of Sciences of the USSR
影响因子:
--
作者:
G. Falin
通讯作者:
G. Falin
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
Gennadi Falin
通讯作者:
Gennadi Falin
影响因子:
1.2
作者:
P. Allaart;M. Monticino
通讯作者:
M. Monticino
影响因子:
2
作者:
A. Krámli;N. Simányi;D. Szász
通讯作者:
D. Szász
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
G. Atkinson
通讯作者:
G. Atkinson