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Neural networks are increasingly used in complex (data-driven) simulations as surrogates or for accelerating the computation of classical surrogates. In many applications physical constraints, such as mass or energy conservation, must be…

计算物理 · 物理学 2020-02-25 Jim Magiera , Deep Ray , Jan S. Hesthaven , Christian Rohde

A tandem deep neural network approach is presented for the inverse design of reactively loaded metasurfaces with prescribed far-field radiation characteristics. The proposed approach integrates a deep neural network (DNN) with a…

应用物理 · 物理学 2026-03-17 Malik Almunif , John Le , Anthony Grbic

We propose a novel method to explain trained deep neural networks (DNNs), by distilling them into surrogate models using unsupervised clustering. Our method can be applied flexibly to any subset of layers of a DNN architecture and can…

计算机视觉与模式识别 · 计算机科学 2020-07-17 Yu-han Liu , Sercan O. Arik

Image deblurring is a classical computer vision problem that aims to recover a sharp image from a blurred image. To solve this problem, existing methods apply the Encode-Decode architecture to design the complex networks to make a good…

图像与视频处理 · 电气工程与系统科学 2021-10-13 Wenbin Zou , Mingchao Jiang , Yunchen Zhang , Liang Chen , Zhiyong Lu , Yi Wu

This paper introduces a method based on a deep neural network (DNN) that is perfectly capable of processing radar data from extremely thinned radar apertures. The proposed DNN processing can provide both aliasing-free radar imaging and…

信号处理 · 电气工程与系统科学 2023-07-12 Christian Schuessler , Marcel Hoffmann , Martin Vossiek

This article investigates the use of deep neural networks (DNNs) for hearing-loss compensation. Hearing loss is a prevalent issue affecting millions of people worldwide, and conventional hearing aids have limitations in providing…

音频与语音处理 · 电气工程与系统科学 2024-12-16 Peter Leer , Jesper Jensen , Laurel H. Carney , Zheng-Hua Tan , Jan Østergaard , Lars Bramsløw

This paper is concerned with a numerical solution of the acoustic scattering by a bounded impenetrable obstacle in three dimensions. The obstacle scattering problem is formulated as a boundary value problem in a bounded domain by using a…

数值分析 · 数学 2020-01-17 Gang Bao , Mingming Zhang , Bin Hu , Peijun Li

This paper investigates lung nodule classification by using deep neural networks (DNNs). Hyperparameter optimization in DNNs is a computationally expensive problem, where evaluating a hyperparameter configuration may take several hours or…

机器学习 · 计算机科学 2019-01-03 Miao Zhang , Huiqi Li , Juan Lyu , Sai Ho Ling , Steven Su

State-of-the-art performance for many edge applications is achieved by deep neural networks (DNNs). Often, these DNNs are location- and time-sensitive, and must be delivered over a wireless channel rapidly and efficiently. In this paper, we…

网络与互联网体系结构 · 计算机科学 2023-07-21 Mikolaj Jankowski , Deniz Gunduz , Krystian Mikolajczyk

This paper is concerned with the inverse acoustic scattering problem with phaseless total-field data at a fixed frequency. An approximate factorization method is developed to numerically reconstruct both the location and shape of the…

数值分析 · 数学 2020-10-15 Bo Zhang , Haiwen Zhang

Solving inverse problems in cardiac electrophysiology consists in the recovery of physiological parameters from surface electrocardiogram (ECG) measurements, a task which is often computationally unfeasible due to the severe ill-posedness…

Untrained neural networks (UNNs) offer high-fidelity electromagnetic inverse scattering reconstruction but are computationally limited by high-dimensional spatial-domain optimization. We propose a Real-Time Physics-Driven Fourier-Spectral…

机器学习 · 计算机科学 2026-02-17 Yutong Du , Zicheng Liu , Yi Huang , Bazargul Matkerim , Bo Qi , Yali Zong , Peixian Han

Inverse problems arise anywhere we have indirect measurement. As, in general they are ill-posed, to obtain satisfactory solutions for them needs prior knowledge. Classically, different regularization methods and Bayesian inference based…

机器学习 · 统计学 2023-08-31 Ali Mohammad-Djafari , Ning Chu , Li Wang , Liang Yu

Deep Neural Networks (DNNs) have revolutionized a wide range of industries, from healthcare and finance to automotive, by offering unparalleled capabilities in data analysis and decision-making. Despite their transforming impact, DNNs face…

机器学习 · 计算机科学 2024-02-08 Zhenyu Liu , Garrett Gagnon , Swagath Venkataramani , Liu Liu

In reverberant conditions with a single speaker, each far-field microphone records a reverberant version of the same speaker signal at a different location. In over-determined conditions, where there are multiple microphones but only one…

音频与语音处理 · 电气工程与系统科学 2024-08-14 Zhong-Qiu Wang

In this paper we introduce a novel way of estimating prediction uncertainty in deep networks through the use of uncertainty surrogates. These surrogates are features of the penultimate layer of a deep network that are forced to match…

机器学习 · 计算机科学 2021-04-19 Radhakrishna Achanta , Natasa Tagasovska

This work studies an inverse scattering problem when limited-aperture data are available that are from just one or a few incident fields. This inverse problem is highly ill-posed due to the limited receivers and a few incident fields…

数值分析 · 数学 2024-10-08 Jianfeng Ning , Jun Zou

Solving inverse problems is a fundamental component of science, engineering and mathematics. With the advent of deep learning, deep neural networks have significant potential to outperform existing state-of-the-art, model-based methods for…

机器学习 · 计算机科学 2022-12-22 Maksym Neyra-Nesterenko , Ben Adcock

This study presents a deep neural network (DNN) framework that accelerates Direct Simulation Monte Carlo (DSMC) computations for rarefied-gas flows, while maintaining high physical fidelity. First, a fully connected deep neural network is…

计算物理 · 物理学 2025-07-01 Ehsan Roohi , Ahmad Shoja-sani

Deep neural networks (DNNs) offer a real-time solution for the inversion of borehole resistivity measurements to approximate forward and inverse operators. It is possible to use extremely large DNNs to approximate the operators, but it…

机器学习 · 计算机科学 2023-07-05 M. Shahriari , D. Pardo , S. Kargaran , T. Teijeiro