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This paper addresses a graph optimization problem, called the Witness Tree problem, which seeks a spanning tree of a graph minimizing a certain non-linear objective function. This problem is of interest because it plays a crucial role in…

数据结构与算法 · 计算机科学 2023-05-09 Dylan Hyatt-Denesik , Afrouz Jabal Ameli , Laura Sanità

Trajectory planning is commonly used as part of a local planner in autonomous driving. This paper considers the problem of planning a continuous-curvature-rate trajectory between fixed start and goal states that minimizes a tunable…

机器人学 · 计算机科学 2021-06-08 Alexander Botros , Stephen L. Smith

In this paper we consider shortest path problems in a directed graph where the transitions between nodes are subject to uncertainty. We use a minimax formulation, where the objective is to guarantee that a special destination state is…

数据结构与算法 · 计算机科学 2016-08-08 Dimitri Bertsekas

We analyze a new general representation for the Minimum Weight Steiner Tree (MST) problem which translates the topological connectivity constraint into a set of local conditions which can be analyzed by the so called cavity equations…

统计力学 · 物理学 2009-01-14 M. Bayati , A. Braunstein , R. Zecchina

Distributed optimization algorithms are frequently faced with solving sub-problems on disjoint connected parts of a network. Unfortunately, the diameter of these parts can be significantly larger than the diameter of the underlying network,…

数据结构与算法 · 计算机科学 2020-08-25 Bernhard Haeupler , Taisuke Izumi , Goran Zuzic

Network design problems aim to compute low-cost structures such as routes, trees and subgraphs. Often, it is natural and desirable to require that these structures have small hop length or hop diameter. Unfortunately, optimization problems…

数据结构与算法 · 计算机科学 2020-11-13 Bernhard Haeupler , D Ellis Hershkowitz , Goran Zuzic

Distributed network optimization algorithms, such as minimum spanning tree, minimum cut, and shortest path, are an active research area in distributed computing. This paper presents a fast distributed algorithm for such problems in the…

数据结构与算法 · 计算机科学 2018-05-29 Bernhard Haeupler , Jason Li , Goran Zuzic

Structured pruning is an effective approach for compressing large pre-trained neural networks without significantly affecting their performance. However, most current structured pruning methods do not provide any performance guarantees, and…

机器学习 · 计算机科学 2023-02-14 Marwa El Halabi , Suraj Srinivas , Simon Lacoste-Julien

Computational complexity and approximation algorithms are reported for a problem of stabbing a set of straight line segments with the least cardinality set of disks of fixed radii $r>0$ where the set of segments forms a straight line…

计算几何 · 计算机科学 2018-03-23 Konstantin Kobylkin

Minimum-weight cut (min-cut) is a basic measure of a network's connectivity strength. While the min-cut can be computed efficiently in the sequential setting [Karger STOC'96], there was no efficient way for a distributed network to compute…

数据结构与算法 · 计算机科学 2020-11-17 Michal Dory , Yuval Efron , Sagnik Mukhopadhyay , Danupon Nanongkai

Given a n points in two dimensional space, a Manhattan Network G is a network that connects all n points with either horizontal or vertical edges, with the property that for any two point in G should be connected by a Manhattan path and…

计算几何 · 计算机科学 2024-03-19 Md. Musfiqur Rahman Sanim , Safrunnesa Saira , Fatin Faiaz Ahsan , Rajon Bardhan , S. M. Ferdous

We consider low connectivity variants of the Survivable Network with Minimum Number of Steiner Points (SN-MSP) problem: given a finite set $R$ of terminals in a metric space (M,d), a subset $B \subseteq R$ of "unstable" terminals, and…

数据结构与算法 · 计算机科学 2013-04-30 Nachshon Cohen , Zeev Nutov

This paper studies constructive heuristics for the minimum labelling spanning tree (MLST) problem. The purpose is to find a spanning tree that uses edges that are as similar as possible. Given an undirected labeled connected graph (i.e.,…

离散数学 · 计算机科学 2014-05-09 Sergio Consoli , Jose Andres Moreno-Perez , Kenneth Darby-Dowman , Nenad Mladenovic

We study the NP-hard problem of approximating a Minimum Routing Cost Spanning Tree in the message passing model with limited bandwidth (CONGEST model). In this problem one tries to find a spanning tree of a graph $G$ over $n$ nodes that…

分布式、并行与集群计算 · 计算机科学 2014-06-06 Alexandra Hochuli , Stephan Holzer , Roger Wattenhofer

In the Steiner Tree Augmentation Problem (STAP), we are given a graph $G = (V,E)$, a set of terminals $R \subseteq V$, and a Steiner tree $T$ spanning $R$. The edges $L := E \setminus E(T)$ are called links and have non-negative costs. The…

数据结构与算法 · 计算机科学 2022-11-15 R. Ravi , Weizhong Zhang , Michael Zlatin

The rectilinear Steiner minimum tree (RSMT) problem computes the shortest network connecting a given set of points using only horizontal and vertical lines, possibly adding extra points (Steiner points) to minimize the total length. RSMT…

数据结构与算法 · 计算机科学 2025-03-05 Puhan Yang , Guchan Li

A fundamental problem in wireless networks is the \emph{minimum spanning tree} (MST) problem: given a set $V$ of wireless nodes, compute a spanning tree $T$, so that the total cost of $T$ is minimized. In recent years, there has been a lot…

分布式、并行与集群计算 · 计算机科学 2012-06-07 Maleq Khan , V. S. Anil Kumar , Gopal Pandurangan , Guanhong Pei

Multi-channel wireless networks are increasingly being employed as infrastructure networks, e.g. in metro areas. Nodes in these networks frequently employ directional antennas to improve spatial throughput. In such networks, given a source…

网络与互联网体系结构 · 计算机科学 2010-02-26 Swaminathan Sankararaman , Alon Efrat , Srinivasan Ramasubramanian , Pankaj K. Agarwal

We describe an algorithm that takes as input n points in the plane and a parameter {\epsilon}, and produces as output an embedded planar graph having the given points as a subset of its vertices in which the graph distances are a (1 +…

计算几何 · 计算机科学 2016-03-22 Glencora Borradaile , David Eppstein

This work presents a novel method for task optimization in industrial plants using quantum-inspired tensor network technology. This method obtains the best possible combination of tasks on a set of machines with directed constraints while…