A bound on the expected overshoot for some concave boundaries

A bound on the expected overshoot for some concave boundaries

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Article ID: iaor19983097
Country: Germany
Volume: 46
Issue: 3
Start Page Number: 253
End Page Number: 267
Publication Date: Jan 1997
Journal: Metrika
Authors: ,
Abstract:

Let X1,X2, ... be independent, identically distributed with finite mean μ > 0, Sn = X1 +···+ Xn. For f(n) = nβ, c > 0 we consider the stopping times Tc = inf {n : Sn > c + f(n)} with overshoot Rc = STc – (c + f(Tc)). For 0 < β < 1 we give a bound for supc ≥ 0 ERc in the spirit of Lorden's well-known inequality for f = 0.

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