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arXiv 2301.13331cs.AIcs.LGphysics.comp-ph
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神经算子:数据是否是你建模世界所需的一切?对数据驱动科学ML范式的洞察

Neural Operator: Is data all you need to model the world? An insight into the paradigm of data-driven scientific ML

Department of Computer Science, Purdue University(普渡大学计算机科学系);Hopkins Extreme Materials Institute, Johns Hopkins University(约翰霍普金斯大学霍普金斯极端材料研究所)

Hrishikesh Viswanath, Md Ashiqur Rahman, Abhijeet Vyas, Andrey Shor, Beatriz Medeiros, Stephanie Hernandez, Suhas Eswarappa Prameela, Aniket Bera

AI总结:

本文探讨数据驱动方法如何补充传统技术解决工程和物理问题,并指出机器学习方法的开放性问题,强调神经算子在离散性和分辨率不变性方面的优势。

摘要:

偏微分方程(PDEs)的数值近似常用于解决涉及多变量函数的物理、工程和数学问题,如热传播、声波传播、流体流动、弹性力学、静电学和电磁学等。尽管这种方法解决了许多复杂现象,但也存在一些局限性。传统方法如有限元法(FEMs)和有限差分法(FDMs)需要大量时间和计算资源。相比之下,数据驱动的机器学习方法,如神经网络,提供了一种更快、相对准确的替代方案,特别是聚焦于具有离散性和分辨率不变性等优势的神经算子。本文旨在全面探讨数据驱动方法如何补充传统技术解决工程和物理问题,同时指出机器学习方法的一些开放性问题。我们将说明这些新计算方法如何在基础和应用物理中带来巨大优势。

英文摘要:

Numerical approximations of partial differential equations (PDEs) are routinely employed to formulate the solution of physics, engineering, and mathematical problems involving functions of several variables, such as the propagation of heat or sound, fluid flow, elasticity, electrostatics, electrodynamics, and more. While this has led to solving many complex phenomena, there are some limitations. Conventional approaches such as Finite Element Methods (FEMs) and Finite Difference Methods (FDMs) require considerable time and are computationally expensive. In contrast, data-driven machine learning-based methods, such as neural networks, provide a faster, fairly accurate alternative, and, in particular, focus on neural operators, which have certain advantages such as discretization invariance and resolution invariance. This article aims to provide a comprehensive insight into how data-driven approaches can complement conventional techniques to solve engineering and physics problems, while also noting some of the open problems of machine learning-based approaches. We will note how these new computational approaches can bring immense advantages in tackling many problems in fundamental and applied physics.

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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