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arXiv 2210.00518math.NAcs.LGcs.NA
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基于物理信息神经网络的数据驱动求解非线性偏微分方程的高精度微分技术

High Precision Differentiation Techniques for Data-Driven Solution of Nonlinear PDEs by Physics-Informed Neural Networks

University of Calabria(卡拉布里亚大学)

Marat S. Mukhametzhanov

摘要:

本文考虑了具有给定初始条件的含时偏微分方程。提出了未知解关于时间变量的新的微分技术。结果表明,所提出的技术允许同时生成准确的高阶导数的一组空间点。然后,计算出的导数可以以不同的方式用于数据驱动的解决方案。在Tensorflow背景框架下,通过Python中的著名DeepXDE软件解决方案,针对三个现实生活中的偏微分方程:Burgers方程,Allen-Cahn方程和Schrodinger方程,提出了物理信息神经网络的应用。

英文摘要:

Time-dependent Partial Differential Equations with given initial conditions are considered in this paper. New differentiation techniques of the unknown solution with respect to time variable are proposed. It is shown that the proposed techniques allow to generate accurate higher order derivatives simultaneously for a set of spatial points. The calculated derivatives can then be used for data-driven solution in different ways. An application for Physics Informed Neural Networks by the well-known DeepXDE software solution in Python under Tensorflow background framework has been presented for three real-life PDEs: Burgers', Allen-Cahn and Schrodinger equations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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