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ICRA
2005
IEEE
113views Robotics» more  ICRA 2005»
15 years 3 months ago
A Sample-based Convex Cover for Rapidly Finding an Object in a 3-D Environment
— In this paper we address the problem of generating a motion strategy to find an object in a known 3-D environment as quickly as possible on average. We use a sampling scheme t...
Alejandro Sarmiento, Rafael Murrieta-Cid, Seth Hut...
DM
1998
82views more  DM 1998»
14 years 10 months ago
Signed analogs of bipartite graphs
We characterize the edge-signed graphs in which every 'significant' positive closed walk (or combination of walks) has even length, under seven different criteria for si...
Thomas Zaslavsky
99
Voted
WDAG
2009
Springer
195views Algorithms» more  WDAG 2009»
15 years 4 months ago
A Local 2-Approximation Algorithm for the Vertex Cover Problem
We present a distributed 2-approximation algorithm for the minimum vertex cover problem. The algorithm is deterministic, and it runs in (∆ + 1)2 synchronous communication rounds,...
Matti Åstrand, Patrik Floréen, Valent...
TCS
2008
14 years 10 months ago
Approximation algorithms for partially covering with edges
The edge dominating set (EDS) and edge cover (EC) problems are classical graph covering problems in which one seeks a minimum cost collection of edges which covers the edges or ve...
Ojas Parekh
66
Voted
STOC
2002
ACM
91views Algorithms» more  STOC 2002»
15 years 10 months ago
The importance of being biased
The Minimum Vertex Cover problem is the problem of, given a graph, finding a smallest set of vertices that touches all edges. We show that it is NP-hard to approximate this proble...
Irit Dinur, Shmuel Safra