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Subexponential loss rate asymptotics for Lévy processes. / Andersen, Lars Nørvang.
I: Mathematical Methods of Operations Research, Bind 73, Nr. 1, 2011, s. 91-108.Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review
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TY - JOUR
T1 - Subexponential loss rate asymptotics for Lévy processes
AU - Andersen, Lars Nørvang
PY - 2011
Y1 - 2011
N2 - We consider a Lévy process reflected in barriers at 0 and K > 0. The loss rate is the mean of the local time at K at time 1 when the process is started in stationarity, and is a natural continuous-time analogue of the stationary expected loss rate for a reflected random walk. We derive asymptotics for the loss rate when K tends to infinity, when the mean of the Lévy process is negative and the positive jumps are subexponential. In the course of this derivation, we achieve a formula, which is a generalization of the celebrated Pollaczeck-Khinchine formula.
AB - We consider a Lévy process reflected in barriers at 0 and K > 0. The loss rate is the mean of the local time at K at time 1 when the process is started in stationarity, and is a natural continuous-time analogue of the stationary expected loss rate for a reflected random walk. We derive asymptotics for the loss rate when K tends to infinity, when the mean of the Lévy process is negative and the positive jumps are subexponential. In the course of this derivation, we achieve a formula, which is a generalization of the celebrated Pollaczeck-Khinchine formula.
U2 - 10.1007/s00186-010-0335-0
DO - 10.1007/s00186-010-0335-0
M3 - Journal article
VL - 73
SP - 91
EP - 108
JO - Mathematical Methods of Operations Research
JF - Mathematical Methods of Operations Research
SN - 1432-2994
IS - 1
ER -