743 search results - page 45 / 149 » Approximation Algorithms for Graph Homomorphism Problems |
CORR
2004
Springer
13 years 7 months ago
2004
Springer
Abstract. The phylogenetic tree construction is to infer the evolutionary relationship between species from the experimental data. However, the experimental data are often imperfec...
SODA
2008
ACM
13 years 9 months ago
2008
ACM
We consider graph coloring problems where the cost of a coloring is the sum of the costs of the colors, and the cost of a color is a monotone concave function of the total weight ...
SPAA
2010
ACM
14 years 19 days ago
2010
ACM
We present a distributed algorithm that finds a maximal edge packing in O(∆ + log∗ W) synchronous communication rounds in a weighted graph, independent of the number of nodes...
STOC
2006
ACM
14 years 1 months ago
2006
ACM
We show that for any constant ε > 0, there is no Ω(log1−ε M)approximation algorithm for the directed congestion minimization problem on networks of size M unless NP ⊆ Z...
ESA
2009
Springer
14 years 2 months ago
2009
Springer
In this paper we show that iterative rounding is a powerful and flexible tool in the design of approximation algorithms for multiobjective optimization problems. We illustrate tha...