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Erschienen in: Journal of Scientific Computing 1/2022

01.10.2022

Splitting-up Spectral Method for Nonlinear Filtering Problems with Correlation Noises

verfasst von: Fengshan Zhang, Yongkui Zou, Shimin Chai, Ran Zhang, Yanzhao Cao

Erschienen in: Journal of Scientific Computing | Ausgabe 1/2022

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Abstract

In this paper, we study nonlinear filtering problems via solving their corresponding Zakai equations. Using the splitting-up technique, we approximate the Zakai equation with two equations consisting of a first-order stochastic partial differential equation and a deterministic second-order partial differential equation. For the splitting-up equations, we use a spectral Galerkin method for the spatial discretization and a finite difference scheme for the temporal discretization. The main results are an error estimate for the semi-discretized scheme with respect to the spatial variable, and an error estimate for the full discretized scheme. To improve the numerical performance, we apply an adaptive technique to accurately locate the support domain of the solution in each time iteration. Finally, we present numerical experiments to demonstrate our theoretical analysis.

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Metadaten
Titel
Splitting-up Spectral Method for Nonlinear Filtering Problems with Correlation Noises
verfasst von
Fengshan Zhang
Yongkui Zou
Shimin Chai
Ran Zhang
Yanzhao Cao
Publikationsdatum
01.10.2022
Verlag
Springer US
Erschienen in
Journal of Scientific Computing / Ausgabe 1/2022
Print ISSN: 0885-7474
Elektronische ISSN: 1573-7691
DOI
https://doi.org/10.1007/s10915-022-01994-6

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