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Collocation method for stochastic delay differential equations
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DOI：10.1016/j.probengmech.2023.103515.png)
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摘要
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In this work, we present a collocation-based numerical approach for handling stochastic delay differential equations. We approximate the solution function, and after that, we carry out integrations between the predefined collocation points to achieve a mapping from the delayed state to the present state. We build the first and second moment mapping matrices based on the mapping, and we utilize the matrices to approximate the stationary first and second moments and their stability. Numerical studies of a first and second-order stochastic delay differential equation show the convergence and time complexity of the stochastic collocation method. The last section covers the issues and possible further improvements of the method.
Keyword:
Collocation
Numerical method
Delay differential equations
Stochastic
Moment stability
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