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» Hardness Results and Efficient Algorithms for Graph Powers
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STOC
2007
ACM
134views Algorithms» more  STOC 2007»
16 years 6 months ago
Hardness of routing with congestion in directed graphs
Given as input a directed graph on N vertices and a set of source-destination pairs, we study the problem of routing the maximum possible number of source-destination pairs on pat...
Julia Chuzhoy, Venkatesan Guruswami, Sanjeev Khann...
WWW
2004
ACM
16 years 6 months ago
SPT-based topology algorithm for constructing power efficient wireless ad hoc networks
In this paper, we present a localized Shortest Path Tree (SPT) based algorithm for constructing a sub-network with the minimum-energy property for a given wireless ad hoc network....
Szu-Chi Wang, David S. L. Wei, Sy-Yen Kuo
WALCOM
2008
IEEE
82views Algorithms» more  WALCOM 2008»
15 years 7 months ago
Exact Algorithms for Maximum Acyclic Subgraph on a Superclass of Cubic Graphs
Abstract. Finding a maximum acyclic subgraph is on the list of problems that seem to be hard to tackle from a parameterized perspective. We develop two quite efficient algorithms (...
Henning Fernau, Daniel Raible
ATAL
2010
Springer
15 years 7 months ago
Pure Nash equilibria: complete characterization of hard and easy graphical games
We consider the computational complexity of pure Nash equilibria in graphical games. It is known that the problem is NP-complete in general, but tractable (i.e., in P) for special...
Albert Xin Jiang, MohammadAli Safari
RTCSA
2000
IEEE
15 years 9 months ago
Efficient resource management for hard real-time communication over differentiated services architectures
We propose an efficient strategy for resource management for scalable QoS guaranteed real-time communication services. This strategy is based on sink trees, and is particularly we...
Byung-Kyu Choi, Riccardo Bettati