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We propose a deep learning approach for wave propagation in media with multiscale wave speed, using a second-order linear wave equation model. We use neural networks to enhance the accuracy of a given inaccurate coarse solver, which…

数值分析 · 数学 2022-05-05 Hieu Nguyen , Richard Tsai

Convolutional neural networks are witnessing wide adoption in computer vision systems with numerous applications across a range of visual recognition tasks. Much of this progress is fueled through advances in convolutional neural network…

计算机视觉与模式识别 · 计算机科学 2018-06-06 Felix Juefei-Xu , Vishnu Naresh Boddeti , Marios Savvides

In this paper, a general model of wireless channels is established based on the physics of wave propagation. Then the problems of inverse scattering and channel prediction are formulated as nonlinear filtering problems. The solutions to the…

数据分析、统计与概率 · 物理学 2015-06-26 Haiqing Wei

Filters of convolutional networks used in computer vision are often visualized as image patches that maximize the response of the filter. We use the same approach to interpret weight matrices in simple architectures for natural language…

计算与语言 · 计算机科学 2019-07-11 Jindřich Libovický

Deep neural networks are representation learning techniques. During training, a deep net is capable of generating a descriptive language of unprecedented size and detail in machine learning. Extracting the descriptive language coded within…

We establish a series of deep convolutional neural networks to automatically analyze position averaged convergent beam electron diffraction patterns. The networks first calibrate the zero-order disk size, center position, and rotation…

数据分析、统计与概率 · 物理学 2018-06-05 Weizong Xu , James M. LeBeau

Training deep neural networks results in strong learned representations that show good generalization capabilities. In most cases, training involves iterative modification of all weights inside the network via back-propagation. In Extreme…

机器学习 · 计算机科学 2018-02-06 Amir Rosenfeld , John K. Tsotsos

Rayleigh wave dispersion curves have been widely used in near-surface studies, and are primarily inverted for the shear wave (S-wave) velocity profiles. However, the inverse problem is ill-posed, non-unique and nonlinear. Here, we introduce…

地球物理 · 物理学 2023-10-24 Rohan Sharma , Divakar Vashisth , Bharath Shekar

The inverse problem of supervised reconstruction of depth-variable (time-dependent) parameters in a neural ordinary differential equation (NODE) is considered, that means finding the weights of a residual network with time continuous…

机器学习 · 计算机科学 2022-02-14 George Baravdish , Gabriel Eilertsen , Rym Jaroudi , B. Tomas Johansson , Lukáš Malý , Jonas Unger

In this paper, we introduce deep learning technology to tackle two traditional low-level image processing problems, companding and inverse halftoning. We make two main contributions. First, to the best knowledge of the authors, this is the…

计算机视觉与模式识别 · 计算机科学 2017-07-24 Xianxu Hou , Guoping Qiu

Capsule networks are a type of neural network that identify image parts and form the instantiation parameters of a whole hierarchically. The goal behind the network is to perform an inverse computer graphics task, and the network parameters…

计算机视觉与模式识别 · 计算机科学 2024-04-25 Saeid Abbassi , Kamaledin Ghiasi-Shirazi , Ahad Harati

Inverse problems arise in a number of domains such as medical imaging, remote sensing, and many more, relying on the use of advanced signal and image processing approaches -- such as sparsity-driven techniques -- to determine their…

机器学习 · 计算机科学 2019-02-01 Jaweria Amjad , Zhaoyan Lyu , Miguel R. D. Rodrigues

Deep learning models have seen significant successes in numerous applications, but their inner workings remain elusive. The purpose of this work is to quantify the learning process of deep neural networks through the lens of a novel…

机器学习 · 计算机科学 2023-05-10 Rayna Andreeva , Katharina Limbeck , Bastian Rieck , Rik Sarkar

The paper considers the problem of velocity model acquisition for a complex media based on boundary measurements. The acoustic model is used to describe the media. We used an open-source dataset of velocity distributions to compare the…

机器学习 · 计算机科学 2024-05-14 A. Stankevich , I. Nechepurenko , A. Shevchenko , L. Gremyachikh , A. Ustyuzhanin , A. Vasyukov

We use machine learning to classify examples of braids (or flat braids) as trivial or non-trivial. Our ML takes form of supervised learning using neural networks (multilayer perceptrons). When they achieve good results in classification, we…

几何拓扑 · 数学 2023-07-25 Alexei Lisitsa , Mateo Salles , Alexei Vernitski

Machine Learning is a powerful tool to reveal and exploit correlations in a multi-dimensional parameter space. Making predictions from such correlations is a highly non-trivial task, in particular when the details of the underlying dynamics…

高能物理 - 唯象学 · 物理学 2019-01-30 Christoph Englert , Peter Galler , Philip Harris , Michael Spannowsky

Bayesian neural networks (BNNs) augment deep networks with uncertainty quantification by Bayesian treatment of the network weights. However, such models face the challenge of Bayesian inference in a high-dimensional and usually…

机器学习 · 计算机科学 2021-03-30 Zhijie Deng , Yucen Luo , Jun Zhu , Bo Zhang

We consider the task of solving generic inverse problems, where one wishes to determine the hidden parameters of a natural system that will give rise to a particular set of measurements. Recently many new approaches based upon deep learning…

机器学习 · 计算机科学 2021-10-13 Simiao Ren , Willie Padilla , Jordan Malof

We present a novel approach for training deep neural networks in a Bayesian way. Classical, i.e. non-Bayesian, deep learning has two major drawbacks both originating from the fact that network parameters are considered to be deterministic.…

机器学习 · 统计学 2019-03-11 Konstantin Posch , Jan Steinbrener , Jürgen Pilz

The reader will learn how digital images are edited using linear algebra and calculus. Starting from the concept of filter towards machine learning techniques such as convolutional neural networks.

计算机视觉与模式识别 · 计算机科学 2024-10-10 Carlos I. Aguirre-Velez , Jose Antonio Arciniega-Nevarez , Eric Dolores-Cuenca