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To date, most analysis of WLANs has been focused on their operation under saturation condition. This work is an attempt to understand the fundamental performance of WLANs under unsaturated condition. In particular, we are interested in the…

网络与互联网体系结构 · 计算机科学 2008-02-26 Ying Jun Zhang , Soung Chang Liew , Darui Chen

Resource optimisation is commonly used in workload management, ensuring efficient and timely task completion utilising available resources. It serves to minimise costs, prompting the development of numerous algorithms tailored to this end.…

分布式、并行与集群计算 · 计算机科学 2024-07-02 Kai Siong Yow , Chunbo Li

With the rapid advancement of data science, charts have evolved from simple numerical presentation tools to essential instruments for insight discovery and decision-making support. However, current chart data intelligence exhibits…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Jiajin Tang , Gaoyang , Wenjie Wang , Sibei Yang , Xing Chen

Pipe routing is a highly complex, time-consuming, and no-deterministic polynomial-time hard (NP-hard) problem in aeroengine design. Despite extensive research efforts in optimizing constant-curvature pipe routing, the growing demand for…

机器学习 · 计算机科学 2025-04-08 Caicheng Wang , Zili Wang , Shuyou Zhang , Yongzhe Xiang , Zheyi Li , Jianrong Tan

The importance of a node in a directed graph can be measured by its PageRank. The PageRank of a node is used in a number of application contexts - including ranking websites - and can be interpreted as the average portion of time spent at…

数据结构与算法 · 计算机科学 2014-05-22 Balázs Csanád Csáji , Raphaël M. Jungers , Vincent D. Blondel

In this paper, we consider the problem of scheduling an application on a parallel computational platform. The application is a particular task graph, either a linear chain of tasks, or a set of independent tasks. The platform is made of…

数据结构与算法 · 计算机科学 2012-10-18 Guillaume Aupy , Anne Benoit

This study develops PureRank, a parameter-free importance measure for network nodes based on the recursive definition of importance (RDI). For any directed network, PureRank uniquely determines an importance score vector without…

社会与信息网络 · 计算机科学 2026-05-08 Hiroyuki Masuyama

Incorporating speed probability distribution to the computation of the route planning in car navigation systems guarantees more accurate and precise responses. In this paper, we propose a novel approach for dynamically selecting the number…

We propose Learned Path Ranking (LPR), a method that accepts an end-effector goal pose, and learns to rank a set of goal-reaching paths generated from an array of path generating methods, including: path planning, Bezier curve sampling, and…

机器人学 · 计算机科学 2022-04-05 Stephen James , Pieter Abbeel

Semi-supervised and unsupervised machine learning methods often rely on graphs to model data, prompting research on how theoretical properties of operators on graphs are leveraged in learning problems. While most of the existing literature…

偏微分方程分析 · 数学 2021-01-12 Amber Yuan , Jeff Calder , Braxton Osting

Recently, Musco and Woodruff (FOCS, 2017) showed that given an $n \times n$ positive semidefinite (PSD) matrix $A$, it is possible to compute a $(1+\epsilon)$-approximate relative-error low-rank approximation to $A$ by querying…

数据结构与算法 · 计算机科学 2021-06-16 Ainesh Bakshi , Nadiia Chepurko , David P. Woodruff

Machine learning models perform well across domains such as diagnostics, weather forecasting, NLP, and autonomous driving, but their limited uncertainty handling restricts use in safety-critical settings. Traditional neural networks often…

机器学习 · 计算机科学 2025-12-01 Bernhard Klein , Falk Selker , Hendrik Borras , Sophie Steger , Franz Pernkopf , Holger Fröning

The trade-off between pull-based and push-based graph processing engines is well-understood. On one hand, pull-based engines can achieve higher throughput because their workloads are read-dominant, rather than write-dominant, and can…

分布式、并行与集群计算 · 计算机科学 2019-03-20 Samuel Grossman , Christos Kozyrakis

Heat kernel pagerank is a variation of Personalized PageRank given in an exponential formulation. In this work, we present a sublinear time algorithm for approximating the heat kernel pagerank of a graph. The algorithm works by simulating…

数据结构与算法 · 计算机科学 2016-12-16 Fan Chung , Olivia Simpson

To reduce the communication cost of differential privacy mechanisms, we introduce a novel construction, called Poisson private representation (PPR), designed to compress and simulate any local randomizer while ensuring local differential…

密码学与安全 · 计算机科学 2024-11-12 Yanxiao Liu , Wei-Ning Chen , Ayfer Özgür , Cheuk Ting Li

Effective Resistance (ER) is a fundamental tool in various graph learning tasks. In this paper, we address the problem of efficiently approximating ER on a graph $\mathcal{G}=(\mathcal{V},\mathcal{E})$ with $n$ vertices and $m$ edges.…

数据结构与算法 · 计算机科学 2025-07-08 Yichun Yang , Rong-Hua Li , Meihao Liao , Guoren Wang

This paper establishes the first theoretical framework for analyzing the rounding-error effects on multigrid methods using mixed-precision iterative-refinement solvers. While motivated by the sparse symmetric positive definite (SPD) matrix…

数值分析 · 数学 2020-07-15 Stephen F. McCormick , Joseph Benzaken , Rasmus Tamstorf

An \emph{$\alpha$-approximate vertex fault-tolerant distance sensitivity oracle} (\emph{$\alpha$-VSDO}) for a weighted input graph $G=(V, E, w)$ and a source vertex $s \in V$ is the data structure answering an $\alpha$-approximate distance…

数据结构与算法 · 计算机科学 2024-07-03 Kaito Harada , Naoki Kitamura , Taisuke Izumi , Toshimitsu Masuzawa

The distributed recursion (DR) algorithm is an effective method for solving the pooling problem that arises in many applications. It is based on the well-known P-formulation of the pooling problem, which involves the flow and quality…

最优化与控制 · 数学 2024-11-15 Wei-Yang Zhang , Feng-Lian Dong , Zhi-Wei Wei , Yan-Ru Wang , Ze-Jin Xu , Wei-Kun Chen , Yu-Hong Dai

The \emph{Workflow Satisfiability Problem (WSP)} is a problem of practical interest that arises whenever tasks need to be performed by authorized users, subject to constraints defined by business rules. We are required to decide whether…

数据结构与算法 · 计算机科学 2015-05-18 David Cohen , Jason Crampton , Andrei Gagarin , Gregory Gutin , Mark Jones