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Importance sampling for pathwise sensitivity of stochastic chaotic systems

Abstract:

This paper proposes a new pathwise sensitivity estimator for chaotic SDEs. By introducing a spring term between the original and perturbated SDEs, we derive a new estimator by importance sampling. The variance of the new estimator increases only linearly in time T, compared with the exponen tial increase of the standard pathwise estimator. We compare our estimator with the Malliavin estimator and extend both of them to the Multilevel Monte Carlo method, which further improves the computationa...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1137/20M1352454

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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author
Publisher:
Society for Industrial and Applied Mathematics Publisher's website
Journal:
SIAM/ASA Journal on Uncertainty Quantification Journal website
Volume:
9
Issue:
3
Pages:
1217–1241
Publication date:
2021-09-16
Acceptance date:
2021-06-14
DOI:
EISSN:
2166-2525
Language:
English
Keywords:
Pubs id:
1193884
Local pid:
pubs:1193884
Deposit date:
2021-09-04

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