388 search results - page 7 / 78 » An approximate algorithm for median graph computation using ... |
DCOSS
2008
Springer
13 years 9 months ago
2008
Springer
We present the first local approximation schemes for maximum independent set and minimum vertex cover in unit disk graphs. In the graph model we assume that each node knows its geo...
WG
2010
Springer
13 years 6 months ago
2010
Springer
Θk-graphs are geometric graphs that appear in the context of graph navigation. The shortest-path metric of these graphs is known to approximate the Euclidean complete graph up to...
COMPGEOM
2008
ACM
13 years 9 months ago
2008
ACM
We introduce a hierarchical partitioning scheme of the Euclidean plane, called circular partitions. Such a partition consists of a hierarchy of convex polygons, each having small ...
COMPGEOM
2010
ACM
14 years 25 days ago
2010
ACM
A graph is near-planar if it can be obtained from a planar graph by adding an edge. We show that it is NP-hard to compute the crossing number of near-planar graphs. The main idea ...
STOC
2010
ACM
14 years 18 days ago
2010
ACM
We give the first polynomial-time approximation scheme (PTAS) for the Steiner forest problem on planar graphs and, more generally, on graphs of bounded genus. As a first step, w...