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Mathematics of Computation
Journal of the American Mathematical Society
ISSN 1088-6842(e) ISSN 0025-5718(p)
     

Optimal approximation of stochastic differential equations by adaptive step-size control

Author(s): Norbert Hofmann; Thomas Müller-Gronbach; Klaus Ritter.
Journal: Math. Comp. 69 (2000), 1017-1034.
MSC (1991): Primary 65U05; Secondary 60H10
Posted: May 20, 1999
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Abstract | References | Similar articles | Additional information

Abstract: We study the pathwise (strong) approximation of scalar stochastic differential equations with respect to the global error in the $L_2$-norm. For equations with additive noise we establish a sharp lower error bound in the class of arbitrary methods that use a fixed number of observations of the driving Brownian motion. As a consequence, higher order methods do not exist if the global error is analyzed. We introduce an adaptive step-size control for the Euler scheme which performs asymptotically optimally. In particular, the new method is more efficient than an equidistant discretization. This superiority is confirmed in simulation experiments for equations with additive noise, as well as for general scalar equations.


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Additional Information:

Norbert Hofmann
Affiliation: Mathematisches Institut, Universität Erlangen-Nürnberg, Bismarckstraße 1 1/2, 91054 Erlangen, Germany
Email: hofmann@mi.uni-erlangen.de

Thomas Müller-Gronbach
Affiliation: Mathematisches Institut, Freie Universität Berlin, Arminallee 2--6, 14195 Berlin, Germany
Email: gronbach@math.fu-berlin.de

Klaus Ritter
Affiliation: Fakultät für Mathematik und Informatik, Universität Passau, Innstr. 33, 94032 Passau, Germany
Email: klaus.ritter@fmi.uni-passau.de

DOI: 10.1090/S0025-5718-99-01177-1
PII: S 0025-5718(99)01177-1
Keywords: Stochastic differential equations, pathwise approximation, adaption, step-size control, asymptotic optimality
Received by editor(s): August 24, 1998
Posted: May 20, 1999
Additional Notes: The first author's work was supported by the DFG:GR 876/9-2.
Copyright of article: Copyright 2000, American Mathematical Society


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