DISCRETIZATION ERROR IN SIMULATION OF ONE-DIMENSIONAL REFLECTING BROWNIAN MOTION

被引:85
作者
Asmussen, Soren [1 ]
Glynn, Peter [2 ]
Pitman, Jim [3 ]
机构
[1] Univ Aalborg, Inst Elect Syst, DK-9220 Aalborg, Denmark
[2] Stanford Univ, Dept Operat Res, Stanford, CA 94305 USA
[3] Univ Calif Berkeley, Dept Stat, Berkeley, CA 94720 USA
关键词
Bessel bridge; Bessel process; bias; excursion; Euler scheme; path decomposition; Riemann zeta function; Spitzer's identity; stochastic differential equation;
D O I
10.1214/aoap/1177004597
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
This paper is concerned with various aspects of the simulation of one-dimensional reflected (or regulated) Brownian motion. The main result shows that the discretization error associated with the Euler scheme for simulation of such a process has both a strong and weak order of convergence of precisely 1/2. This contrasts with the faster order 1 achievable for simulations of SDE's without reflecting boundaries. The asymptotic distribution of the discretization error is described using Williams' decomposition of a Brownian path at the time of a minimum. Improved methods for simulation of reflected Brownian motion are discussed.
引用
收藏
页码:875 / 896
页数:22
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