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Neural operators have been validated as promising deep surrogate models for solving partial differential equations (PDEs). Despite the critical role of boundary conditions in PDEs, however, only a limited number of neural operators robustly…

数值分析 · 数学 2023-12-13 Ziyuan Liu , Yuhang Wu , Daniel Zhengyu Huang , Hong Zhang , Xu Qian , Songhe Song

In this paper, we experimentally analyze the robustness of selected Federated Learning (FL) systems in the presence of adversarial clients. We find that temporal attacks significantly affect model performance in the FL models tested,…

机器学习 · 计算机科学 2025-01-22 Rohit Mapakshi , Sayma Akther , Mark Stamp

Deep Neural Networks have demonstrated remarkable success in various domains but remain susceptible to adversarial examples, which are slightly altered inputs designed to induce misclassification. While adversarial attacks typically…

机器学习 · 计算机科学 2024-08-29 Weiyou Liu , Zhenyang Li , Weitong Chen

Solving Singularly Perturbed Differential Equations (SPDEs) poses computational challenges arising from the rapid transitions in their solutions within thin regions. The effectiveness of deep learning in addressing differential equations…

机器学习 · 计算机科学 2024-09-10 Ye Li , Ting Du , Yiwen Pang , Zhongyi Huang

Deep learning methods are emerging as popular computational tools for solving forward and inverse problems in traffic flow. In this paper, we study a neural operator framework for learning solutions to nonlinear hyperbolic partial…

机器学习 · 计算机科学 2024-06-26 Bilal Thonnam Thodi , Sai Venkata Ramana Ambadipudi , Saif Eddin Jabari

Although many fields have witnessed the superior performance brought about by deep learning, the robustness of neural networks remains an open issue. Specifically, a small adversarial perturbation on the input may cause the model to produce…

计算机视觉与模式识别 · 计算机科学 2022-03-17 Binxiao Huang , Chaofan Tao , Rui Lin , Ngai Wong

Operator learning is a variant of machine learning that is designed to approximate maps between function spaces from data. The Fourier Neural Operator (FNO) is one of the main model architectures used for operator learning. The FNO combines…

数值分析 · 数学 2025-09-29 Samuel Lanthaler , Andrew M. Stuart , Margaret Trautner

We train Fourier Neural Operator (FNO) surrogate models for Rayleigh-B\'enard Convection (RBC), a model for convection processes that occur in nature and industrial settings. We compare the prediction accuracy and model properties of FNO…

流体动力学 · 物理学 2025-01-28 Michiel Straat , Thorben Markmann , Barbara Hammer

Deep learning-based surrogate models have been widely applied in geological carbon storage (GCS) problems to accelerate the prediction of reservoir pressure and CO2 plume migration. Large amounts of data from physics-based numerical…

机器学习 · 统计学 2024-01-11 Hewei Tang , Qingkai Kong , Joseph P. Morris

This study investigates the application of machine learning, specifically Fourier Neural Operator (FNO) and Convolutional Neural Network (CNN), to learn time-advancement operators for parametric partial differential equations (PDEs). Our…

机器学习 · 计算机科学 2024-02-19 Rixin Yu , Erdzan Hodzic

Flow-based generative models leverage invertible generator functions to fit a distribution to the training data using maximum likelihood. Despite their use in several application domains, robustness of these models to adversarial attacks…

机器学习 · 计算机科学 2019-11-21 Phillip Pope , Yogesh Balaji , Soheil Feizi

Face recognition (FR) has recently made substantial progress and achieved high accuracy on standard benchmarks. However, it has raised security concerns in enormous FR applications because deep CNNs are unusually vulnerable to adversarial…

计算机视觉与模式识别 · 计算机科学 2021-09-30 Xiao Yang , Dingcheng Yang , Yinpeng Dong , Hang Su , Wenjian Yu , Jun Zhu

Recently salient object detection has witnessed remarkable improvement owing to the deep convolutional neural networks which can harvest powerful features for images. In particular, state-of-the-art salient object detection methods enjoy…

计算机视觉与模式识别 · 计算机科学 2019-05-10 Haofeng Li , Guanbin Li , Yizhou Yu

Understanding the spatial arrangement and nature of real-world objects is of paramount importance to many complex engineering tasks, including autonomous navigation. Deep learning has revolutionized state-of-the-art performance for tasks in…

计算机视觉与模式识别 · 计算机科学 2019-04-02 Matthew Wicker , Marta Kwiatkowska

The inclusion of high-fidelity simulations of SOL turbulence and transient MHD events such as ELMs in highly iterative applications remains computationally prohibitive, limiting their use in design and control workflows. Understanding these…

等离子体物理 · 物理学 2025-07-28 N. Carey , L. Zanisi , S. Pamela , V. Gopakumar , J. Omotani , J. Buchanan , J. Brandstetter , F. Paischer , G. Galletti , P. Setinek

Learning solution operators for differential equations with neural networks has shown great potential in scientific computing, but ensuring their stability under input perturbations remains a critical challenge. This paper presents a robust…

机器学习 · 计算机科学 2026-01-13 Chutian Huang , Chang Ma , Kaibo Wang , Yang Xiang

Fourier Neural Operators (FNOs) have demonstrated exceptional accuracy in mapping functional spaces by leveraging Fourier transforms to establish a connection with underlying physical principles. However, their opaque inner workings often…

流体动力学 · 物理学 2025-11-04 Marco Cayuela , Vincent Le Chenadec , Peter Schmid , Taraneh Sayadi

Neural operators have emerged as powerful tools for learning solution operators of partial differential equations. However, in time-dependent problems, standard training strategies such as teacher forcing introduce a mismatch between…

机器学习 · 计算机科学 2025-05-28 Zaijun Ye , Chen-Song Zhang , Wansheng Wang

Magnetotelluric (MT) forward modeling is fundamental for improving the accuracy and efficiency of MT inversion. Neural operators (NOs) have been effectively used for rapid MT forward modeling, demonstrating their promising performance in…

地球物理 · 物理学 2025-07-10 Feng Wang , Hong Qiu , Yingying Huang , Xiaozhe Gu , Renfang Wang , Bo Yang

Classical sequential models employed in time-series prediction rely on learning the mappings from the past to the future instances by way of a hidden state. The Hidden states characterise the historical information and encode the required…

机器学习 · 计算机科学 2023-02-14 Vignesh Gopakumar , Stanislas Pamela , Lorenzo Zanisi