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Volumetric data compression is critical in fields like medical imaging, scientific simulation, and entertainment. We introduce a structure-free neural compression method combining Fourierfeature encoding with selective voxel sampling,…

计算机视觉与模式识别 · 计算机科学 2025-08-13 Leona Žůrková , Petr Strakoš , Michal Kravčenko , Tomáš Brzobohatý , Lubomír Říha

The main objective of this paper is to extend Morse-Forman theory to vector-valued functions. This is mostly motivated by the need to develop new tools and methods to compute multiparameter persistence. To generalize the theory, in addition…

几何拓扑 · 数学 2024-05-17 Guillaume Brouillette , Madjid Allili , Tomasz Kaczynski

We introduce and compare new compression approaches to obtain regularized solutions of large linear systems which are commonly encountered in large scale inverse problems. We first describe how to approximate matrix vector operations with a…

数值分析 · 数学 2016-08-12 Sergey Voronin , Dylan Mikesell , Guust Nolet

In this paper, we propose a new Semi-Nonnegative Matrix Factorization method for 2-dimensional (2D) data, named TS-NMF. It overcomes the drawback of existing methods that seriously damage the spatial information of the data by converting 2D…

机器学习 · 计算机科学 2020-05-20 Chong Peng , Zhilu Zhang , Zhao Kang , Chenglizhao Chen , Qiang Cheng

A novel general framework is proposed in this paper for dimension reduction in regression to fill the gap between linear and fully nonlinear dimension reduction. The main idea is to transform first each of the raw predictors monotonically,…

统计方法学 · 统计学 2014-01-03 Tao Wang , Xu Guo , Peirong Xu , Lixing Zhu

We develop a method to reconstruct, from measured displacements of an underlying elastic substrate, the spatially dependent forces that cells or tissues impart on it. Given newly available high-resolution images of substrate displacements,…

定量方法 · 定量生物学 2018-01-22 Joshua C. Chang , Yanli Liu , Tom Chou

The numerical approximation of partial differential equations (PDEs) poses formidable challenges in high dimensions since classical grid-based methods suffer from the so-called curse of dimensionality. Recent attempts rely on a combination…

机器学习 · 计算机科学 2023-07-31 Lorenz Richter , Leon Sallandt , Nikolas Nüsken

Modern deep architectures often rely on large-scale datasets, but training on these datasets incurs high computational and storage overhead. Real-world datasets often contain substantial redundancies, prompting the need for more…

机器学习 · 计算机科学 2025-06-27 Suorong Yang , Peijia Li , Furao Shen , Jian Zhao

We introduce a force-directed algorithm, called Sync-and-Burst, which falls into the category of classical force-directed graph drawing algorithms. A distinct feature in Sync-and-Burst is the use of simplified forces of attraction and…

计算几何 · 计算机科学 2015-09-18 Farshad Ghassemi Toosi , Nikola S. Nikolov

t-distributed stochastic neighbor embedding (t-SNE) is a well-established visualization method for complex high-dimensional data. However, the original t-SNE method is nonparametric, stochastic, and often cannot well prevserve the global…

计算机视觉与模式识别 · 计算机科学 2022-01-14 Zixia Zhou , Yuanyuan Wang , Boudewijn P. F. Lelieveldt , Qian Tao

We introduce a new method, the Local Monge Parametrizations (LMP) method, to approximate tensor fields on general surfaces given by a collection of local parametrizations, e.g.~as in finite element or NURBS surface representations. Our goal…

计算物理 · 物理学 2020-02-20 Alejandro Torres-Sánchez , Daniel Santos-Oliván , Marino Arroyo

Modeling data as being sampled from a union of independent subspaces has been widely applied to a number of real world applications. However, dimensionality reduction approaches that theoretically preserve this independence assumption have…

机器学习 · 计算机科学 2016-04-08 Devansh Arpit , Ifeoma Nwogu , Venu Govindaraju

In recent years, Deep Learning has gained popularity for its ability to solve complex classification tasks, increasingly delivering better results thanks to the development of more accurate models, the availability of huge volumes of data…

We propose a continuous-time scheme for large-scale optimization that introduces individual, adaptive momentum coefficients regulated by the kinetic energy of each model parameter. This approach automatically adjusts to local landscape…

机器学习 · 计算机科学 2026-02-03 Aikaterini Karoni , Rajit Rajpal , Benedict Leimkuhler , Gabriel Stoltz

We present Attract-Repel, an algorithm for improving the semantic quality of word vectors by injecting constraints extracted from lexical resources. Attract-Repel facilitates the use of constraints from mono- and cross-lingual resources,…

The rapid growth in complexity and size of modern deep neural networks (DNNs) has increased challenges related to computational costs and memory usage, spurring a growing interest in efficient model compression techniques. Previous…

计算机视觉与模式识别 · 计算机科学 2025-07-04 Sarthak Ketanbhai Modi , Zi Pong Lim , Shourya Kuchhal , Yushi Cao , Yupeng Cheng , Yon Shin Teo , Shang-Wei Lin , Zhiming Li

This paper proposes a supervised dimension reduction methodology for tensor data which has two advantages over most image-based prognostic models. First, the model does not require tensor data to be complete which expands its application to…

机器学习 · 计算机科学 2023-06-06 Chengyu Zhou , Xiaolei Fang

Non-linear dimensionality reduction (NDR) methods such as LLE and t-SNE are popular with visualization researchers and experienced data analysts, but present serious problems of interpretation. In this paper, we present DimReader, a…

人机交互 · 计算机科学 2019-07-08 Rebecca Faust , David Glickenstein , Carlos Scheidegger

An important problem that arises in many engineering applications is the boundary value problem for ordinary differential equations. There have been many computational methods proposed for dealing with this problem. The convergence of the…

数值分析 · 数学 2019-07-17 Duggirala Meher Krishna , Duggirala Ravi

Deep neural networks (DNNs) frequently contain far more weights, represented at a higher precision, than are required for the specific task which they are trained to perform. Consequently, they can often be compressed using techniques such…

机器学习 · 计算机科学 2020-12-03 Vinu Joseph , Saurav Muralidharan , Animesh Garg , Michael Garland , Ganesh Gopalakrishnan