The Seven-League Scheme: Deep learning for large time step Monte Carlo simulations of stochastic differential equations

Shuaiqiang Liu, Lech Grzelak and Cornelis Oosterlee

Papers from arXiv.org

Abstract: We propose an accurate data-driven numerical scheme to solve Stochastic Differential Equations (SDEs), by taking large time steps. The SDE discretization is built up by means of a polynomial chaos expansion method, on the basis of accurately determined stochastic collocation (SC) points. By employing an artificial neural network to learn these SC points, we can perform Monte Carlo simulations with large time steps. Error analysis confirms that this data-driven scheme results in accurate SDE solutions in the sense of strong convergence, provided the learning methodology is robust and accurate. With a method variant called the compression-decompression collocation and interpolation technique, we can drastically reduce the number of neural network functions that have to be learned, so that computational speed is enhanced. Numerical experiments confirm a high-quality strong convergence error when using large time steps, and the novel scheme outperforms some classical numerical SDE discretizations. Some applications, here in financial option valuation, are also presented.

Date: 2020-09, Revised 2021-09
New Economics Papers: this item is included in nep-big and nep-cmp
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Journal Article: The Seven-League Scheme: Deep Learning for Large Time Step Monte Carlo Simulations of Stochastic Differential Equations (2022)
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2009.03202

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