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This paper proposes a computationally efficient algorithm to address the Full-Waveform Inversion (FWI) problem with a Total Variation (TV) constraint, designed to accurately reconstruct subsurface properties from seismic data. FWI, as an…

信号处理 · 电气工程与系统科学 2025-01-15 Yudai Inada , Shingo Takemoto , Shunsuke Ono

In this work, we develop an optimization framework for problems whose solutions are well-approximated by Hierarchical Tucker (HT) tensors, an efficient structured tensor format based on recursive subspace factorizations. By exploiting the…

数值分析 · 数学 2014-05-12 Curt Da Silva , Felix J. Herrmann

A face-centred finite volume (FCFV) method is proposed for the linear elasticity equation. The FCFV is a mixed hybrid formulation, featuring a system of first-order equations, that defines the unknowns on the faces (edges in two dimensions)…

数值分析 · 数学 2019-08-16 Ruben Sevilla , Matteo Giacomini , Antonio Huerta

Tensor factorization models offer an effective approach to convert massive electronic health records into meaningful clinical concepts (phenotypes) for data analysis. These models need a large amount of diverse samples to avoid population…

机器学习 · 计算机科学 2017-10-13 Yejin Kim , Jimeng Sun , Hwanjo Yu , Xiaoqian Jiang

Markov chain Monte Carlo (MCMC) is a powerful tool for sampling from complex probability distributions. Despite its versatility, MCMC often suffers from strong autocorrelation and the negative sign problem, leading to slowing down the…

统计力学 · 物理学 2024-12-05 Synge Todo

In this paper, we propose a novel convolutional neural network (CNN) architecture, MFRNet, for post-processing (PP) and in-loop filtering (ILF) in the context of video compression. This network consists of four Multi-level Feature review…

图像与视频处理 · 电气工程与系统科学 2020-12-15 Di Ma , Fan Zhang , David R. Bull

Fast Fourier Transform (FFT) is an essential tool in scientific and engineering computation. The increasing demand for mixed-precision FFT has made it possible to utilize half-precision floating-point (FP16) arithmetic for faster speed and…

分布式、并行与集群计算 · 计算机科学 2021-04-26 Binrui Li , Shenggan Cheng , James Lin

Multi-modal reasoning systems rely on a pre-trained object detector to extract regions of interest from the image. However, this crucial module is typically used as a black box, trained independently of the downstream task and on a fixed…

计算机视觉与模式识别 · 计算机科学 2021-10-13 Aishwarya Kamath , Mannat Singh , Yann LeCun , Gabriel Synnaeve , Ishan Misra , Nicolas Carion

We introduce a cutting-edge video compression framework tailored for the age of ubiquitous video data, uniquely designed to serve machine learning applications. Unlike traditional compression methods that prioritize human visual perception,…

计算机视觉与模式识别 · 计算机科学 2024-10-25 Huan Cui , Qing Li , Hanling Wang , Yong jiang

Tensor factorization has been proved as an efficient unsupervised learning approach for health data analysis, especially for computational phenotyping, where the high-dimensional Electronic Health Records (EHRs) with patients' history of…

机器学习 · 计算机科学 2022-11-04 Jing Ma , Qiuchen Zhang , Jian Lou , Li Xiong , Sivasubramanium Bhavani , Joyce C. Ho

This paper studies deep network architectures to address the problem of video classification. A multi-stream framework is proposed to fully utilize the rich multimodal information in videos. Specifically, we first train three Convolutional…

计算机视觉与模式识别 · 计算机科学 2015-11-12 Zuxuan Wu , Yu-Gang Jiang , Xi Wang , Hao Ye , Xiangyang Xue , Jun Wang

Sparse representation is a viable solution to visual tracking. In this paper, we propose a structured multi-task multi-view tracking (SMTMVT) method, which exploits the sparse appearance model in the particle filter framework to track…

计算机视觉与模式识别 · 计算机科学 2018-06-07 Mohammadreza Javanmardi , Xiaojun Qi

Spatio-temporal data sets are rapidly growing in size. For example, environmental variables are measured with ever-higher resolution by increasing numbers of automated sensors mounted on satellites and aircraft. Using such data, which are…

统计方法学 · 统计学 2019-11-14 Marcin Jurek , Matthias Katzfuss

Total variation (TV) is a widely used function for regularizing imaging inverse problems that is particularly appropriate for images whose underlying structure is piecewise constant. TV regularized optimization problems are typically solved…

图像与视频处理 · 电气工程与系统科学 2025-08-26 Edward P. Chandler , Shirin Shoushtari , Brendt Wohlberg , Ulugbek S. Kamilov

Video matting aims to predict the alpha mattes for each frame from a given input video sequence. Recent solutions to video matting have been dominated by deep convolutional neural networks (CNN) for the past few years, which have become the…

计算机视觉与模式识别 · 计算机科学 2022-12-01 Jiachen Li , Vidit Goel , Marianna Ohanyan , Shant Navasardyan , Yunchao Wei , Humphrey Shi

It is well believed that video captioning is a fundamental but challenging task in both computer vision and artificial intelligence fields. The prevalent approach is to map an input video to a variable-length output sentence in a sequence…

计算机视觉与模式识别 · 计算机科学 2019-05-06 Jingwen Chen , Yingwei Pan , Yehao Li , Ting Yao , Hongyang Chao , Tao Mei

Implicit Neural Representations (INRs) have emerged as a promising paradigm for video compression. However, existing INR-based frameworks typically suffer from inherent spectral bias, which favors low-frequency components and leads to…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Jun Zhu , Xinfeng Zhang , Lv Tang , Junhao Jiang , Gai Zhang , Jia Wang

Implicit neural representations (INRs) have emerged as powerful tools for encoding signals, yet dominant MLP-based designs often suffer from slow convergence, overfitting to noise, and poor extrapolation. We introduce FUTON (Fourier Tensor…

图像与视频处理 · 电气工程与系统科学 2026-02-17 Pooya Ashtari , Pourya Behmandpoor , Nikos Deligiannis , Aleksandra Pizurica

In this paper we provide a latent-variable formulation and solution to the recommender system (RS) problem in terms of a fundamental property that any reasonable solution should be expected to satisfy. Specifically, we examine a novel…

信息检索 · 计算机科学 2022-07-05 Tung Nguyen , Sang T. Truong , Jeffrey Uhlmann

Multi-task and multi-domain learning methods seek to learn multiple tasks/domains, jointly or one after another, using a single unified network. The primary challenge and opportunity lie in leveraging shared information across these tasks…

机器学习 · 计算机科学 2026-02-03 Yash Garg , Nebiyou Yismaw , Rakib Hyder , Ashley Prater-Bennette , M. Salman Asif