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This paper considers the problem of tracking a dynamic sparse channel in a broadband wireless communication system. A probabilistic signal model is firstly proposed to describe the special features of temporal correlations of dynamic sparse…

信息论 · 计算机科学 2016-11-15 Xudong Zhu , Linglong Dai , Wei Dai , Zhaocheng Wang , Marc Moonen

Both discrete and continuum models have been widely used to study rapid granular flow, discrete model is accurate but computationally expensive, whereas continuum model is computationally efficient but its accuracy is doubtful in many…

流体动力学 · 物理学 2015-12-24 Xizhong Chen , Junwu Wang , Jinghai Li

Tipping points are abrupt, drastic, and often irreversible changes in the evolution of non-stationary and chaotic dynamical systems. For instance, increased greenhouse gas concentrations are predicted to lead to drastic decreases in low…

In this paper we are concerned with numerical methods for the one-sided event location in discontinuous differential problems, whose event function is nonlinear (in particular, of polynomial type). The original problem is transformed into…

数值分析 · 数学 2022-05-12 Pierluigi Amodio , Luigi Brugnano , Felice Iavernaro

This paper presents a theoretical framework for the design and analysis of gradient descent-based algorithms for coverage control tasks involving robot swarms. We adopt a multiscale approach to analysis and design to ensure consistency of…

最优化与控制 · 数学 2022-06-08 Vishaal Krishnan , Sonia Martínez

We study the problem of sensor placement in environments in which localization is a necessity, such as ad-hoc wireless sensor networks that allow the placement of a few anchors that know their location or sensor arrays that are tracking a…

计算几何 · 计算机科学 2016-07-21 Ioana O. Bercea , Volkan Isler , Samir Khuller

This paper is concerned with the deployment of multiple mobile robots in order to autonomously cover a region Q. The region to be covered is described using a density function which may not be apriori known. In this paper, we pose the…

系统与控制 · 电气工程与系统科学 2019-08-06 Rihab Abdul Razak , Srikant Sukumar , Hoam Chung

In this paper, we propose a numerical method to uniformly handle the random genetic drift model for pure drift with or without natural selection and mutation. For pure drift and natural selection case, the Dirac $\delta$ singularity will…

数值分析 · 数学 2023-10-27 Chenghua Duan , Chun Liu , Xingye Yue

Multiple fixed-wing unmanned aerial vehicles (multi-UAVs) encounter significant challenges in cooperative path following over complex Digital Elevation Model (DEM) low-altitude airspace, including wind field disturbances, sudden obstacles,…

机器人学 · 计算机科学 2026-03-26 Zimao Sheng , Zirui Yu , Hong'an Yang

This paper presents an optimization-based receding horizon trajectory planning algorithm for dynamical systems operating in unstructured and cluttered environments. The proposed approach is a two-step procedure that uses a motion planning…

最优化与控制 · 数学 2019-12-12 Kristoffer Bergman , Oskar Ljungqvist , Torkel Glad , Daniel Axehill

Cloud computing is recognized as one of the most promising solutions to information technology, e.g., for storing and sharing data in the web service which is sustained by a company or third party instead of storing data in a hard drive or…

分布式、并行与集群计算 · 计算机科学 2018-12-14 A. Roy , A. P. Misra , S. Banerjee

In this work, it is presented the development of a novel distributed algorithm performing robotic coverage, clustering and dispatch around an event in static-obstacle structured environments without relying on metric information.…

系统与控制 · 电气工程与系统科学 2022-02-22 Marco Fabris , Angelo Cenedese

Cover times measure the speed of exhaustive searches which require the exploration of an entire spatial region(s). Applications include the immune system hunting pathogens, animals collecting food, robotic demining or cleaning, and computer…

概率论 · 数学 2024-07-11 Hyunjoong Kim , Sean D Lawley

The problem is area-restricted search for targets using an autonomous mobile sensing platform. Detection is imperfect: the probability of detection depends on the range to the target, while the probability of false detections is non-zero.…

信息论 · 计算机科学 2019-11-12 Branko Ristic , Alex Skvortsov

We investigate dynamic versions of geometric set cover and hitting set where points and ranges may be inserted or deleted, and we want to efficiently maintain an (approximately) optimal solution for the current problem instance. While their…

计算几何 · 计算机科学 2020-03-03 Pankaj K. Agarwal , Hsien-Chih Chang , Subhash Suri , Allen Xiao , Jie Xue

We study the online problem of assigning a moving point to a base-station region that contains it. For instance, the moving object could represent a cellular phone and the base station could represent the coverage zones of cell towers. Our…

计算几何 · 计算机科学 2011-05-03 David Eppstein , Michael T. Goodrich , Maarten Löffler

We present a novel predict-then-optimize framework for maritime search operations that integrates trajectory forecasting with UAV deployment optimization-an end-to-end approach not addressed in prior work. A large language model predicts…

神经与进化计算 · 计算机科学 2026-02-03 Jingeun Kim , Yong-Hyuk Kim , Yourim Yoon

UAV Geo-Localization faces significant challenges due to the drastic appearance discrepancy between dronecaptured images and satellite views. Existing methods typically assume a consistent scaling factor across views and rely on predefined…

计算机视觉与模式识别 · 计算机科学 2025-04-03 Quan Chen , Tingyu Wang , Rongfeng Lu , Yu Liu , Bolun Zheng , Zhedong Zheng

Conformal prediction provides a pivotal and flexible technique for uncertainty quantification by constructing prediction sets with a predefined coverage rate. Many online conformal prediction methods have been developed to address data…

机器学习 · 统计学 2026-02-25 Dongjian Hu , Junxi Wu , Shu-Tao Xia , Changliang Zou

One of the most common methods to train machine learning algorithms today is the stochastic gradient descent (SGD). In a distributed setting, SGD-based algorithms have been shown to converge theoretically under specific circumstances. A…

机器学习 · 计算机科学 2025-08-22 Soumya Sarkar , Shweta Jain