45 search results - page 3 / 9 » An Improved Approximation Algorithm for Maximum Edge 2-Color... |
136
Voted
APPROX
2008
Springer
15 years 4 months ago
2008
Springer
We study approximation algorithms, integrality gaps, and hardness of approximation, of two problems related to cycles of "small" length k in a given graph. The instance f...
121
Voted
STOC
1998
ACM
15 years 7 months ago
1998
ACM
Given an undirected graph with edge costs and a subset of k nodes called terminals, a multiway cut is a subset of edges whose removal disconnects each terminal from the rest. Mult...
133
Voted
ISAAC
2004
Springer
15 years 8 months ago
2004
Springer
We study complexity and approximation of min weighted node coloring in planar, bipartite and split graphs. We show that this problem is NP-complete in planar graphs, even if they a...
120
Voted
ESA
2007
Springer
15 years 9 months ago
2007
Springer
Given a (directed or undirected) graph with edge costs, the power of a node is the maximum cost of an edge leaving it, and the power of the graph is the sum of the powers of its n...
134
Voted
SODA
2010
ACM
16 years 3 days ago
2010
ACM
The crossing number of a graph is the least number of pairwise edge crossings in a drawing of the graph in the plane. We provide an O(n log n) time constant factor approximation al...