Duffy, Ken R. and Meyn, Sean P. (2010) Most likely paths to error when estimating the mean of a reflected random walk. Performance Evaluation. ISSN 0166-5316
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Abstract
It is known that simulation of the mean position of a Reflected Random Walk (RRW) {Wn}
exhibits non-standard behavior, even for light-tailed increment distributions with negative
drift. The Large Deviation Principle (LDP) holds for deviations below the mean, but for
deviations at the usual speed above the mean the rate function is null. This paper takes a
deeper look at this phenomenon. Conditional on a large sample mean, a complete sample path
LDP analysis is obtained. Let I denote the rate function for the one dimensional increment
process. If I is coercive, then given a large simulated mean position, under general conditions
our results imply that the most likely asymptotic behavior, ∗, of the paths n−1W⌊tn⌋ is to
be zero apart from on an interval [T0, T1] ⊂ [0, 1] and to satisfy the functional equation
∇I
Item Type: | Article |
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Keywords: | reflected random walks; queue-length; waiting time; simulation mean position; large deviations; most likely paths; |
Academic Unit: | Faculty of Science and Engineering > Research Institutes > Hamilton Institute |
Item ID: | 2160 |
Depositing User: | Dr Ken Duffy |
Date Deposited: | 07 Oct 2010 15:34 |
Journal or Publication Title: | Performance Evaluation |
Publisher: | Elsevier SD North Holland |
Refereed: | No |
Related URLs: | |
URI: | https://mu.eprints-hosting.org/id/eprint/2160 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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