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  4. Solving Non-linear Kolmogorov Equations in Large Dimensions by Using Deep Learning: A Numerical Comparison of Discretization Schemes
 
research article

Solving Non-linear Kolmogorov Equations in Large Dimensions by Using Deep Learning: A Numerical Comparison of Discretization Schemes

Marino, Raffaele
•
Macris, Nicolas  
January 1, 2023
Journal Of Scientific Computing

Non-linear partial differential Kolmogorov equations are successfully used to describe a wide range of time dependent phenomena, in natural sciences, engineering or even finance. For example, in physical systems, the Allen-Cahn equation describes pattern formation associated to phase transitions. In finance, instead, the Black-Scholes equation describes the evolution of the price of derivative investment instruments. Such modern applications often require to solve these equations in high-dimensional regimes in which classical approaches are ineffective. Recently, an interesting new approach based on deep learning has been introduced byby E, Han and Jentzen [1, 2]. The main idea is to construct a deep network which is trained from the samples of discrete stochastic differential equations underlying Kolmogorov's equation. The network is able to approximate, numerically at least, the solutions of the Kolmogorov equation with polynomial complexity in whole spatial domains. In this contribution we study variants of the deep networks by using different discretizations schemes of the stochastic differential equation. We compare the performance of the associated networks, on benchmarked examples, and show that, for some discretization schemes, improvements in the accuracy are possible without affecting the observed computational complexity.

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Type
research article
DOI
10.1007/s10915-022-02044-x
Web of Science ID

WOS:000887647700005

Author(s)
Marino, Raffaele
Macris, Nicolas  
Date Issued

2023-01-01

Publisher

SPRINGER/PLENUM PUBLISHERS

Published in
Journal Of Scientific Computing
Volume

94

Issue

1

Start page

8

Subjects

Mathematics, Applied

•

Mathematics

•

partial differential equations

•

deep learning

•

numerical analysis

•

partial-differential-equations

•

neural-network

•

particles

•

algorithm

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SMILS  
Available on Infoscience
January 16, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/193783
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