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Robust topology optimization (RTO), as a class of topology optimization problems, identifies a design with the best average performance while reducing the response sensitivity to input uncertainties, e.g. load uncertainty. Solving RTO is…

机器学习 · 计算机科学 2024-08-22 Rini Jasmine Gladstone , Mohammad Amin Nabian , Vahid Keshavarzzadeh , Hadi Meidani

A number of popular transfer learning methods rely on grid search to select regularization hyperparameters that control over-fitting. This grid search requirement has several key disadvantages: the search is computationally expensive,…

机器学习 · 计算机科学 2025-01-28 Ethan Harvey , Mikhail Petrov , Michael C. Hughes

Neural network solvers for partial differential equations (PDEs) have made significant progress, yet they continue to face challenges related to data scarcity and model robustness. Traditional data augmentation methods, which leverage…

机器学习 · 计算机科学 2024-09-05 Yunpeng Gong , Yongjie Hou , Zhenzhong Wang , Zexin Lin , Min Jiang

Many important problems in science and engineering require solving the so-called parametric partial differential equations (PDEs), i.e., PDEs with different physical parameters, boundary conditions, shapes of computational domains, etc.…

数值分析 · 数学 2024-02-06 Zhanhong Ye , Xiang Huang , Hongsheng Liu , Bin Dong

The main aim of this study is to introduce a 2-layered Artificial Neural Network (ANN) for solving the Black-Scholes partial differential equation (PDE) of either fractional or ordinary orders. Firstly, a discretization method is employed…

机器学习 · 计算机科学 2021-08-04 Saeed Bajalan , Nastaran Bajalan

To overcome these obstacles and improve computational accuracy and efficiency, this paper presents the Randomized Radial Basis Function Neural Network (RRNN), an innovative approach explicitly crafted for solving multiscale elliptic…

数值分析 · 数学 2024-07-23 Yuhang Wu , Ziyuan Liu , Wenjun Sun , Xu Qian

This paper presents an innovative approach to mitigating the peak-to-average power ratio (PAPR). The proposed method uses a deep learning model called autoencoders (AEs) to simplify the process and avoid the complex calculations of…

信号处理 · 电气工程与系统科学 2025-03-03 Omar Alnaseri , Ibtesam R. K. Al-Saedi , Yassine Himeur , Hongxiang Li

We introduce a new numerical method based on machine learning to approximate the solution of elliptic partial differential equations with collocation using a set of sigmoidal functions. We show that a feedforward neural network with a…

数值分析 · 数学 2023-03-24 Francesco Calabrò , Gianluca Fabiani , Constantinos Siettos

We present a method for solving linear and nonlinear PDEs based on the variable projection (VarPro) framework and artificial neural networks (ANN). For linear PDEs, enforcing the boundary/initial value problem on the collocation points…

数值分析 · 数学 2022-07-20 Suchuan Dong , Jielin Yang

The Physics-Informed Neural Network (PINN) framework introduced recently incorporates physics into deep learning, and offers a promising avenue for the solution of partial differential equations (PDEs) as well as identification of the…

机器学习 · 计算机科学 2021-08-04 Ehsan Haghighat , Ali Can Bekar , Erdogan Madenci , Ruben Juanes

In this paper, we focus on the finite difference approximation of nonlinear degenerate parabolic equations, a special class of parabolic equations where the viscous term vanishes in certain regions. This vanishing gives rise to additional…

数值分析 · 数学 2024-06-11 Ziyao Xu , Yong-Tao Zhang

In this work, we present a hybrid numerical method for solving evolution partial differential equations (PDEs) by merging the time finite element method with deep neural networks. In contrast to the conventional deep learning-based…

数值分析 · 数学 2024-09-05 Xiaodong Feng , Haojiong Shangguan , Tao Tang , Xiaoliang Wan , Tao Zhou

Neural networks are powerful tools for approximating high dimensional data that have been used in many contexts, including solution of partial differential equations (PDEs). We describe a solver for multiscale fully nonlinear elliptic…

数值分析 · 数学 2025-03-07 Shi Chen , Zhiyan Ding , Qin Li , Stephen J. Wright

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

Physics informed neural networks (PINNs) have emerged as a powerful tool to provide robust and accurate approximations of solutions to partial differential equations (PDEs). However, PINNs face serious difficulties and challenges when…

机器学习 · 计算机科学 2023-07-11 Rajat Arora

The authors propose and analyze a well-posed numerical scheme for a type of ill-posed elliptic Cauchy problem by using a constrained minimization approach combined with the weak Galerkin finite element method. The resulting Euler-Lagrange…

数值分析 · 数学 2018-06-06 Chunmei Wang , Junping Wang

This paper proposes a classification framework with a rejection option to mitigate the performance deterioration caused by adversarial examples. While recent machine learning algorithms achieve high prediction performance, they are…

机器学习 · 计算机科学 2020-10-27 Masahiro Kato , Zhenghang Cui , Yoshihiro Fukuhara

Identifying partial differential equations (PDEs) from data is crucial for understanding the governing mechanisms of natural phenomena, yet it remains a challenging task. We present an extension to the ARGOS framework, ARGOS-RAL, which…

机器学习 · 计算机科学 2024-05-03 Weizhen Li , Rui Carvalho

Fourier Neural Operators (FNO) offer a principled approach to solving challenging partial differential equations (PDE) such as turbulent flows. At the core of FNO is a spectral layer that leverages a discretization-convergent representation…

机器学习 · 计算机科学 2024-03-06 Robert Joseph George , Jiawei Zhao , Jean Kossaifi , Zongyi Li , Anima Anandkumar

We present a novel method for using Neural Networks (NNs) for finding solutions to a class of Partial Differential Equations (PDEs). Our method builds on recent advances in Neural Radiance Field research (NeRFs) and allows for a NN to…

机器学习 · 计算机科学 2022-05-31 Jaroslaw Rzepecki , Daniel Bates , Chris Doran