Sciweavers

752 search results - page 39 / 151
» Faster approximation algorithms for the minimum latency prob...
Sort
View
AAIM
2009
Springer
98views Algorithms» more  AAIM 2009»
14 years 2 months ago
Latency Constrained Aggregation in Chain Networks Admits a PTAS
This paper studies the aggregation of messages in networks that consist of a chain of nodes, and each message is time-constrained such that it needs to be aggregated during a give...
Tim Nonner, Alexander Souza
DISOPT
2010
129views more  DISOPT 2010»
13 years 7 months ago
Labeled Traveling Salesman Problems: Complexity and approximation
We consider labeled Traveling Salesman Problems, defined upon a complete graph of n vertices with colored edges. The objective is to find a tour of maximum or minimum number of co...
Basile Couëtoux, Laurent Gourvès, J&ea...
ESA
2009
Springer
129views Algorithms» more  ESA 2009»
14 years 1 months ago
Constant Ratio Fixed-Parameter Approximation of the Edge Multicut Problem
Abstract. The input of the Edge Multicut problem consists of an undirected graph G and pairs of terminals {s1, t1}, . . . , {sm, tm}; the task is to remove a minimum set of edges s...
Dániel Marx, Igor Razgon
APPROX
2000
Springer
190views Algorithms» more  APPROX 2000»
13 years 11 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
WADS
2009
Springer
274views Algorithms» more  WADS 2009»
14 years 2 months ago
Approximating Transitive Reductions for Directed Networks
Abstract. We consider minimum equivalent digraph problem, its maximum optimization variant and some non-trivial extensions of these two types of problems motivated by biological an...
Piotr Berman, Bhaskar DasGupta, Marek Karpinski