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Finite element discretizations of problems in computational physics often rely on adaptive mesh refinement (AMR) to preferentially resolve regions containing important features during simulation. However, these spatial refinement strategies…

计算工程、金融与科学 · 计算机科学 2022-09-27 Corbin Foucart , Aaron Charous , Pierre F. J. Lermusiaux

This article presents the first mixed-integer linear programming (MILP)-based iterative algorithm to solve factorable mixed-integer nonlinear programs (MINLPs) with bounded, differentiable periodic functions to global optimality with an…

最优化与控制 · 数学 2025-10-01 Christopher Montez , Sujeevraja Sanjeevi , Kaarthik Sundar

The quality of datasets is one of the key factors that affect the accuracy of aerodynamic data models. For example, in the uniformly sampled Burgers' dataset, the insufficient high-speed data is overwhelmed by massive low-speed data.…

机器学习 · 计算机科学 2020-10-20 Liwei Hu , Yu Xiang , Jun Zhan , Zifang Shi , Wenzheng Wang

This paper investigates the multi-UAV multi-task coordination problem in infrastructure-less emergency scenarios, where UAVs collaboratively are required to jointly perform aerial image acquisition and ground-user communication. To tackle…

网络与互联网体系结构 · 计算机科学 2026-05-12 Xindi Wang , Haining Li , Tao Ding , Bolin Cai

Given the ubiquity of multi-task in practical systems, Multi-Task Learning (MTL) has found widespread application across diverse domains. In real-world scenarios, these tasks often have different priorities. For instance, In web search,…

机器学习 · 计算机科学 2024-12-17 Zhengxing Cheng , Yuheng Huang , Zhixuan Zhang , Dan Ou , Qingwen Liu

Exploiting unmanned aerial vehicles (UAVs) to execute tasks is gaining growing popularity recently. To solve the underlying task scheduling problem, the deep reinforcement learning (DRL) based methods demonstrate notable advantage over the…

机器学习 · 计算机科学 2023-06-07 Xiao Mao , Zhiguang Cao , Mingfeng Fan , Guohua Wu , Witold Pedrycz

Modular reconfigurable manipulators enable quick adaptation and versatility to address different application environments and tailor to the specific requirements of the tasks. Task performance significantly depends on the manipulator's…

机器人学 · 计算机科学 2024-12-17 Maolin Lei , Edoardo Romiti , Arturo Laurenz , Nikos G. Tsagarakis

The efficient and reliable approximation of convection-dominated problems continues to remain a challenging task. To overcome the difficulties associated with the discretization of convection-dominated equations, stabilization techniques…

数值分析 · 数学 2022-12-15 Marius Paul Bruchhäuser , Kristina Schwegler , Markus Bause

Although multi-task learning is widely applied in intelligent services, traditional multi-task modeling methods often require customized designs based on specific task combinations, resulting in a cumbersome modeling process. Inspired by…

机器学习 · 计算机科学 2025-04-15 Jingxuan Zhou , Weidong Bao , Ji Wang , Zhengyi Zhong , Dayu Zhang

We propose a novel approach for 3D mesh reconstruction from multi-view images. Our method takes inspiration from large reconstruction models like LRM that use a transformer-based triplane generator and a Neural Radiance Field (NeRF) model…

Forecast combination involves using multiple forecasts to create a single, more accurate prediction. Recently, feature-based forecasting has been employed to either select the most appropriate forecasting models or to optimize the weights…

机器学习 · 计算机科学 2023-12-14 Giovanni Felici , Antonio M. Sudoso

In this article, we present a three-dimensional anisotropic $hp$-mesh refinement strategy for ultraweak discontinuous Petrov--Galerkin (DPG) formulations with optimal test functions. The refinement strategy utilizes the built-in…

计算工程、金融与科学 · 计算机科学 2023-09-06 Ankit Chakraborty , Stefan Henneking , Leszek Demkowicz

Mesh adaptivity is a useful tool for efficient solution to partial differential equations in very complex geometries. In the present paper we discuss the use of polygonal mesh refinement in order to tackle two common issues: first,…

数值分析 · 数学 2021-12-21 Stefano Berrone , Alessandro D'Auria

Deep matrix factorizations (deep MFs) are recent unsupervised data mining techniques inspired by constrained low-rank approximations. They aim to extract complex hierarchies of features within high-dimensional datasets. Most of the loss…

机器学习 · 计算机科学 2023-01-26 Pierre De Handschutter , Nicolas Gillis

In this work, we present an anisotropic multi-goal error control based on the Dual Weighted Residual (DWR) method for time-dependent convection-diffusion-reaction (CDR) equations. This multi-goal oriented approach allows for an accurate and…

We present a modification to the Berger and Oliger adaptive mesh refinement algorithm designed to solve systems of coupled, non-linear, hyperbolic and elliptic partial differential equations. Such systems typically arise during constrained…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Frans Pretorius , Matthew W. Choptuik

We present a novel approach for high-order accurate numerical differentiation on unstructured meshes of quadrilateral elements. To differentiate a given function, an auxiliary function with greater smoothness properties is defined which…

数值分析 · 数学 2022-05-11 Yulong Pan , Per-Olof Persson

Mathematical morphology is a theory and technique to collect features like geometric and topological structures in digital images. Given a target image, determining suitable morphological operations and structuring elements is a cumbersome…

计算机视觉与模式识别 · 计算机科学 2019-09-05 Yucong Shen , Xin Zhong , Frank Y. Shih

A significant challenge to make learning techniques more suitable for general purpose use is to move beyond i) complete supervision, ii) low dimensional data, iii) a single task and single view per instance. Solving these challenges allows…

机器学习 · 计算机科学 2012-02-07 Buyue Qian , Xiang Wang , Ian Davidson

X-ray Computed Tomography (CT) is one of the most important diagnostic imaging techniques in clinical applications. Sparse-view CT imaging reduces the number of projection views to a lower radiation dose and alleviates the potential risk of…

图像与视频处理 · 电气工程与系统科学 2024-11-22 Xiaohong Fan , Ke Chen , Huaming Yi , Yin Yang , Jianping Zhang