743 search results - page 9 / 149 » Approximation Algorithms for Graph Homomorphism Problems |
IPL
2006
13 years 7 months ago
2006
We present an NC approximation algorithm for the weighted matching problem in graphs with an approximation ratio of (1 - ). This improves the previously best approximation ratio of...
CORR
2010
Springer
13 years 7 months ago
2010
Springer
We consider the problem of finding a lowest cost dominating set in a given disk graph containing n disks. The problem has been extensively studied on subclasses of disk graphs, ye...
WAOA
2010
Springer
13 years 5 months ago
2010
Springer
We study approximation solutions for the densest k-subgraph problem (DS-k) on several classes of intersection graphs. We adopt the concept of -quasi elimination orders, introduced ...
SODA
2001
ACM
13 years 9 months ago
2001
ACM
In the 0-extension problem, we are given a weighted graph with some nodes marked as terminals and a semimetric on the set of terminals. Our goal is to assign the rest of the nodes ...
SOFSEM
2009
Springer
14 years 4 months ago
2009
Springer
During the last years, speed-up techniques for DIJKSTRA’s algorithm have been developed that make the computation of shortest paths a matter of microseconds even on huge road net...