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Deterministic channel modeling maps a physical environment to its site-specific electromagnetic response. Ray tracing produces complete multi-dimensional channel information but remains prohibitively expensive for area-wide deployment. We…

信息论 · 计算机科学 2026-03-31 Xiucheng Wang , Junxi Huang , Conghao Zhou , Xuemin Shen , Nan Cheng

Two of the most fundamental distributed symmetry-breaking problems are that of finding a maximal independent set (MIS) and a maximal matching (MM) in a graph. It is a major open question whether these problems can be solved in constant…

分布式、并行与集群计算 · 计算机科学 2025-03-03 Keren Censor-Hillel , Tomer Even , Maxime Flin , Magnús M. Halldórsson

Autonomous agents are limited in their ability to observe the world state. Partially observable Markov decision processes (POMDPs) formally model the problem of planning under world state uncertainty, but POMDPs with continuous actions and…

机器人学 · 计算机科学 2020-07-08 Dicong Qiu , Yibiao Zhao , Chris L. Baker

Network security is a critical concern in the digital landscape of today, with users demanding secure browsing experiences and protection of their personal data. This study explores the dynamic integration of Machine Learning (ML)…

网络与互联网体系结构 · 计算机科学 2026-04-17 Pablo Benlloch , Oscar Romero , Antonio Leon , Jaime Lloret

Independent set is a fundamental problem in combinatorial optimization. While in general graphs the problem is essentially inapproximable, for many important graph classes there are approximation algorithms known in the offline setting.…

计算几何 · 计算机科学 2020-03-06 Monika Henzinger , Stefan Neumann , Andreas Wiese

While Artificial intelligence (AI), including Generative AI, are effective at generating high-quality traffic data and optimization solutions in intelligent transportation systems (ITSs), these techniques often demand significant training…

人工智能 · 计算机科学 2025-05-09 Enqiang Zhu , Chenkai Hao , Chanjuan Liu , Yongsheng Rao

An active reconfigurable intelligent surface (RIS)-aided multi-user downlink communication system is investigated, where non-orthogonal multiple access (NOMA) is employed to improve spectral efficiency, and the active RIS is powered by…

信号处理 · 电气工程与系统科学 2023-04-25 Zhaoyuan Shi , Huabing Lu , Xianzhong Xie , Helin Yang , Chongwen Huang , Jun Cai , Zhiguo Ding

We study the Maximum Independent Set (MIS) problem on general graphs within the framework of learning-augmented algorithms. The MIS problem is known to be NP-hard and is also NP-hard to approximate to within a factor of $n^{1-\delta}$ for…

数据结构与算法 · 计算机科学 2024-07-17 Vladimir Braverman , Prathamesh Dharangutte , Vihan Shah , Chen Wang

In the past years, many quantum algorithms have been proposed to tackle hard combinatorial problems. In particular, the Maximum Independent Set (MIS) is a known NP-hard problem that can be naturally encoded in Rydberg atom arrays. By…

量子物理 · 物理学 2023-06-26 Constantin Dalyac , Louis-Paul Henry , Minhyuk Kim , Jaewook Ahn , Loïc Henriet

The identification of Line-of-Sight (LoS) conditions is critical for ensuring reliable high-frequency communication links, which are particularly vulnerable to blockages and rapid channel variations. Network Digital Twins (NDTs) and…

信号处理 · 电气工程与系统科学 2025-05-22 Michele Zhu , Silvia Mura , Francesco Linsalata , Lorenzo Cazzella , Damiano Badini , Umberto Spagnolini

Map labeling is a classical problem in cartography and geographic information systems (GIS) that asks to place labels for area, line, and point features, with the goal to select and place the maximum number of independent, i.e.,…

计算几何 · 计算机科学 2022-02-18 Sujoy Bhore , Guangping Li , Martin Nöllenburg

We present the problem of finding a maximal independent set (MIS) (named as \emph{MIS Filling problem}) of an arbitrary connected graph having $n$ vertices with luminous myopic mobile robots. The robots enter the graph one after another…

分布式、并行与集群计算 · 计算机科学 2022-10-18 Subhajit Pramanick , Sai Vamshi Samala , Debasish Pattanayak , Partha Sarathi Mandal

The present paper studies local distributed graph problems in highly dynamic networks. Communication and changes of the graph happen in synchronous rounds and our algorithms always, i.e., in every round, satisfy non-trivial guarantees, no…

数据结构与算法 · 计算机科学 2018-12-10 Philipp Bamberger , Fabian Kuhn , Yannic Maus

In distributed networks, it is often useful for the nodes to be aware of dense subgraphs, e.g., such a dense subgraph could reveal dense subtructures in otherwise sparse graphs (e.g. the World Wide Web or social networks); these might…

分布式、并行与集群计算 · 计算机科学 2012-08-08 Atish Das Sarma , Ashwin Lall , Danupon Nanongkai , Amitabh Trehan

In this article, we address a class of non convex, integer, non linear mathematical programs using dynamic programming. The mathematical program considered, whose properties are studied in this article, may be used to model the optimal…

离散数学 · 计算机科学 2021-12-28 David Nizard , Nicolas Dupin , Dominique Quadri

In this letter, we derive an expression for the achievable rate in a multiple-input multiple-output (MIMO) system assisted by a beyond-diagonal reconfigurable intelligent surface (BD-RIS) when the channels to and from the BD-RIS are…

信息论 · 计算机科学 2025-04-11 Ignacio Santamaria , Jesus Gutierrez , Mohammad Soleymani , Eduard Jorswieck

Distributed Opportunistic Scheduling (DOS) techniques have been recently proposed to improve the throughput performance of wireless networks. With DOS, each station contends for the channel with a certain access probability. If a contention…

网络与互联网体系结构 · 计算机科学 2014-12-16 Andres Garcia-Saavedra , Albert Banchs , Pablo Serrano , Joerg Widmer

For combinatorial optimization problems, model-based paradigms such as mixed-integer programming (MIP) and constraint programming (CP) aim to decouple modeling and solving a problem: the `holy grail' of declarative problem solving. We…

人工智能 · 计算机科学 2026-03-13 Ryo Kuroiwa , J. Christopher Beck

Multilevel Image thresholding is an important preprocessing algorithm in computer vision applications nowadays. Since most common thresholding methods take the desired count of thresholds as input by the user, thresholding methods that…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Eslam Hegazy , Mohamed Gabr

The fully connected K-user interference channel is studied in a multipath environment with bandwidth W. We show that when each link consists of D physical paths, the total spectral efficiency can grow {\it linearly} with K. This result…

信息论 · 计算机科学 2008-09-19 Leonard Grokop , David N. C. Tse , Roy D. Yates