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In this work, we propose the Sparse Multi-Family Deep Scattering Network (SMF-DSN), a novel architecture exploiting the interpretability of the Deep Scattering Network (DSN) and improving its expressive power. The DSN extracts salient and…

机器学习 · 统计学 2020-12-15 Romain Cosentino , Randall Balestriero

A methodology is proposed, which addresses the caveat that line-of-sight emission spectroscopy presents in that it cannot provide spatially resolved temperature measurements in nonhomogeneous temperature fields. The aim of this research is…

机器学习 · 计算机科学 2022-12-16 Ruiyuan Kang , Dimitrios C. Kyritsis , Panos Liatsis

In [1], we introduced a new, matrix algebraic, performance analysis framework for wireless systems with fading channels based on the matrix exponential distribution. The main idea was to use the compact, powerful, and easy-to-use, matrix…

信息论 · 计算机科学 2016-12-21 Peter Larsson , Lars K. Rasmussen , Mikael Skoglund

Deep generative models offer a powerful alternative to conventional channel estimation by learning the complex prior distribution of wireless channels. Capitalizing on this potential, this paper proposes a novel channel estimation algorithm…

信息论 · 计算机科学 2025-10-27 Xiaotian Fan , Xingyu Zhou , Le Liang , Shi Jin

Morden deep ensembles technique achieves strong uncertainty estimation performance by going through multiple forward passes with different models. This is at the price of a high storage space and a slow speed in the inference (test) time.…

机器学习 · 计算机科学 2024-03-13 Ha Manh Bui , Anqi Liu

In this work, we propose using the mixture density network (MDN) to estimate cosmological parameters. We test the MDN method by constraining parameters of the $\Lambda$CDM and $w$CDM models using Type Ia supernovae and the power spectra of…

宇宙学与河外天体物理 · 物理学 2022-09-05 Guo-Jian Wang , Cheng Cheng , Yin-Zhe Ma , Jun-Qing Xia

Deep generative models learn the data distribution, which is concentrated on a low-dimensional manifold. The geometric analysis of distribution transformation provides a better understanding of data structure and enables a variety of…

计算机视觉与模式识别 · 计算机科学 2024-06-28 Junhao Chen , Manyi Li , Zherong Pan , Xifeng Gao , Changhe Tu

While deep neural networks (NN) significantly advance image compressed sensing (CS) by improving reconstruction quality, the necessity of training current CS NNs from scratch constrains their effectiveness and hampers rapid deployment.…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Bin Chen , Zhenyu Zhang , Weiqi Li , Chen Zhao , Jiwen Yu , Shijie Zhao , Jie Chen , Jian Zhang

Radio-Frequency (RF) imaging concerns the digital recreation of the surfaces of scene objects based on the scattered field at distributed receivers. To solve this difficult inverse scattering problems, data-driven methods are often employed…

A central problem of turbulence theory is to produce a predictive model for turbulent fluxes. These have profound implications for virtually all aspects of the turbulence dynamics. In magnetic confinement devices, drift-wave turbulence…

等离子体物理 · 物理学 2020-07-01 R. A. Heinonen , P. H. Diamond

This paper introduces a new Windowed Green Function (WGF) method for the numerical integral-equation solution of problems of electromagnetic scattering by obstacles in presence of dielectric or conducting half-planes. The WGF method, which…

计算物理 · 物理学 2015-08-05 Oscar Bruno , Mark Lyon , Carlos Perez-Arancibia , Catalin Turc

Learning complex distributions is a fundamental challenge in contemporary applications. Shen and Meinshausen (2024) introduced engression, a generative approach based on scoring rules that maps noise (and covariates, if available) directly…

机器学习 · 计算机科学 2025-08-19 Xinwei Shen , Nicolai Meinshausen , Tong Zhang

The research about deep learning application for physical layer has been received much attention in recent years. In this paper, we propose a Deep Learning (DL) based channel estimator under time varying Rayleigh fading channel. We build…

信号处理 · 电气工程与系统科学 2019-08-30 Qinbo Bai , Jintao Wang , Yue Zhang , Jian Song

In this article, we propose a data-driven methodology for combining the solutions of a set of competing turbulence models. The individual model predictions are linearly combined for providing an ensemble solution accompanied by estimates of…

流体动力学 · 物理学 2023-01-24 Maximilien de Zordo-Banliat , Grégory Dergham , Xavier Merle , Paola Cinnella

SWinvert is a workflow developed at The University of Texas at Austin for the inversion of surface wave dispersion data. SWinvert encourages analysts to investigate inversion uncertainty and non-uniqueness in shear wave velocity (Vs) by…

地球物理 · 物理学 2021-04-06 Joseph P. Vantassel , Brady R. Cox

Current strategies for solving image-based inverse problems apply latent diffusion models to perform posterior sampling.However, almost all approaches make no explicit attempt to explore the solution space, instead drawing only a single…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Amir Nazemi , Mohammad Hadi Sepanj , Nicholas Pellegrino , Chris Czarnecki , Paul Fieguth

We propose a new method for calculating reflection and transmission coefficients for an arbitrarily polarized electromagnetic plane wave incident on a one-dimensional dielectric medium of finite thickness and with dielectric permittivity…

光学 · 物理学 2022-04-27 N. A. Vanyushkin , A. H. Gevorgyan , S. S. Golik

An accurate and fast method is presented for scattering of electromagnetic waves from an array of time-modulated graphene ribbons. We derive a time-domain integral equation for induced surface currents under subwavelength approximation.…

光学 · 物理学 2023-06-28 Mahdi Rahmanzadeh , Behzad Rejaei , Amin Khavasi

The numerical analysis of elastic wave propagation in unbounded media may be difficult due to spurious waves reflected at the model artificial boundaries. This point is critical for the analysis of wave propagation in heterogeneous or…

计算物理 · 物理学 2010-09-07 Jean-François Semblat , Luca Lenti , Ali Gandomzadeh

Motivated by oceanographic observational datasets, we propose a probabilistic neural network (PNN) model for calculating turbulent energy dissipation rates from vertical columns of velocity and density gradients in density stratified…

流体动力学 · 物理学 2021-12-03 Sam F. Lewin , Stephen M. de Bruyn Kops , Gavin D. Portwood , Colm-cille P. Caulfield