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ESA
2003
Springer
189views Algorithms» more  ESA 2003»
15 years 11 months ago
On the Complexity of Approximating TSP with Neighborhoods and Related Problems
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
Shmuel Safra, Oded Schwartz
ATAL
2008
Springer
15 years 8 months ago
Discovering tactical behavior patterns supported by topological structures in soccer agent domains
Behaviors in soccer-agent domains can involve individual plays, several players involved in tactical plays or the whole team trying to follow strategies supported by specific form...
Fernando Ramos, Huberto Ayanegui
JCO
2006
126views more  JCO 2006»
15 years 6 months ago
Combinatorics of TCP reordering
We study a combinatorial problem motivated by a receiver-oriented model of TCP traffic from [7], that incorporates information on both arrival times, and the dynamics of packet IDs...
Anders Hansson, Gabriel Istrate, Shiva Prasad Kasi...
STOC
2009
ACM
155views Algorithms» more  STOC 2009»
16 years 6 months ago
A nearly optimal oracle for avoiding failed vertices and edges
We present an improved oracle for the distance sensitivity problem. The goal is to preprocess a directed graph G = (V, E) with non-negative edge weights to answer queries of the f...
Aaron Bernstein, David R. Karger
INFOCOM
2009
IEEE
16 years 25 days ago
Delay Guarantees for Throughput-Optimal Wireless Link Scheduling
—We consider the question of obtaining tight delay guarantees for throughout-optimal link scheduling in arbitrary topology wireless ad-hoc networks. We consider two classes of sc...
Koushik Kar, Xiang Luo, Saswati Sarkar