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arXiv 2406.04822cs.LG
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M2NO:一种高效的多分辨率运算框架用于动态多尺度PDE求解器

M2NO: An Efficient Multi-Resolution Operator Framework for Dynamic Multi-Scale PDE Solvers

The Hong Kong University of Science and Technology (Guangzhou)(香港科学与技术大学(广州));The Hong Kong University of Science and Technology(香港科学与技术大学);Southwest Jiaotong University(西南交通大学)

Zhihao Li, Zhilu Lai, Xiaobo Zhang, Wei Wang

AI总结:

M2NO是一种高效的多分辨率运算框架,通过结合多网格结构和多小波空间,提升高维PDE求解的精度和效率,并在多种任务中表现优异。

摘要:

求解高维偏微分方程(PDEs)需要高效处理不同分辨率下的多尺度特征。为解决这一挑战,我们提出了基于多小波的多网格神经运算器(M2NO),一种深度学习框架,该框架结合了多网格结构和预定义的多小波空间。M2NO利用多分辨率分析,选择性地将低频误差成分转移到更粗糙的网格,同时在更精细的层次上保留高频细节。这种设计在不引入额外复杂性的情况下提高了精度和计算效率。此外,M2NO作为迭代求解器的有效预条件子,进一步加速了大规模PDE模拟的收敛速度。通过在多样化的PDE基准测试中进行广泛评估,包括高分辨率、超分辨率任务和预条件设置,M2NO始终优于现有模型。其能够高效捕捉细尺度变化和大尺度结构的能力,使其成为复杂PDE模拟的稳健且多功能的解决方案。我们的代码和数据集可在https://github.com/lizhihao2022/M2NO上获取。

英文摘要:

Solving high-dimensional partial differential equations (PDEs) efficiently requires handling multi-scale features across varying resolutions. To address this challenge, we present the Multiwavelet-based Multigrid Neural Operator (M2NO), a deep learning framework that integrates a multigrid structure with predefined multiwavelet spaces. M2NO leverages multi-resolution analysis to selectively transfer low-frequency error components to coarser grids while preserving high-frequency details at finer levels. This design enhances both accuracy and computational efficiency without introducing additional complexity. Moreover, M2NO serves as an effective preconditioner for iterative solvers, further accelerating convergence in large-scale PDE simulations. Through extensive evaluations on diverse PDE benchmarks, including high-resolution, super-resolution tasks, and preconditioning settings, M2NO consistently outperforms existing models. Its ability to efficiently capture fine-scale variations and large-scale structures makes it a robust and versatile solution for complex PDE simulations. Our code and datasets are available on https://github.com/lizhihao2022/M2NO.

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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