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» Approximating Spanning Trees with Inner Nodes Cost
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COR
2008
142views more  COR 2008»
13 years 9 months ago
Modeling and solving the rooted distance-constrained minimum spanning tree problem
In this paper we discuss models and methods for solving the rooted distance constrained minimum spanning tree problem which is defined as follows: given a graph G = (V, E) with no...
Luis Gouveia, Ana Paias, Dushyant Sharma
ALGORITHMICA
2005
99views more  ALGORITHMICA 2005»
13 years 9 months ago
Improved Approximation Algorithms for the Quality of Service Multicast Tree Problem
Abstract. The Quality of Service Multicast Tree Problem is a generalization of the Steiner tree problem which appears in the context of multimedia multicast and network design. In ...
Marek Karpinski, Ion I. Mandoiu, Alexander Olshevs...
FOCS
2009
IEEE
14 years 4 months ago
Approximability of Combinatorial Problems with Multi-agent Submodular Cost Functions
Abstract— Applications in complex systems such as the Internet have spawned recent interest in studying situations involving multiple agents with their individual cost or utility...
Gagan Goel, Chinmay Karande, Pushkar Tripathi, Lei...
SECON
2008
IEEE
14 years 4 months ago
Distributed Protocols for Finding Low-Cost Broadcast and Multicast Trees in Wireless Networks
Abstract—In this paper, we propose and evaluate two distributed protocols for finding low-cost broadcast and multicast trees in wireless networks. The constructed trees can then...
Nazanin Rahnavard, Badri N. Vellambi, Faramarz Fek...
APPROX
2000
Springer
190views Algorithms» more  APPROX 2000»
14 years 2 months ago
Approximating node connectivity problems via set covers
Given a graph (directed or undirected) with costs on the edges, and an integer k, we consider the problem of nding a k-node connected spanning subgraph of minimum cost. For the ge...
Guy Kortsarz, Zeev Nutov