632 search results - page 20 / 127 » On the Approximability of the Steiner Tree Problem |
JUCS
2008
13 years 8 months ago
2008
: Evolutionary algorithms are effective search tools for tackling difficult optimization problems. In this paper an algorithm based on living processes where cooperation is the mai...
JUCS
2007
13 years 8 months ago
2007
: We give a tight analysis of an old and popular sweep-line heuristic for constructing a spanning tree of a set of n points in the plane. The algorithm sweeps a vertical line acros...
SODA
2003
ACM
13 years 10 months ago
2003
ACM
We give a 7.18-approximation algorithm for the minimum latency problem that uses only O(n log n) calls to the prize-collecting Steiner tree (PCST) subroutine of Goemans and Willia...
ICALP
2005
Springer
14 years 2 months ago
2005
Springer
Virtual Private Network Design is the following NP-hard problem. We are given a communication network, represented as a weighted graph with thresholds on the nodes which represent...
APPROX
2005
Springer
14 years 2 months ago
2005
Springer
The field of stochastic optimization studies decision making under uncertainty, when only probabilistic information about the future is available. Finding approximate solutions to...