69 search results - page 9 / 14 » Improved Approximation Algorithms for Minimum Weight Vertex ... |
STOC
2010
ACM
14 years 7 days ago
2010
ACM
The Steiner tree problem is one of the most fundamental ÆÈ-hard problems: given a weighted undirected graph and a subset of terminal nodes, find a minimum weight tree spanning ...
APPROX
2009
Springer
14 years 2 months ago
2009
Springer
We explore the average-case “Vickrey” cost of structures in a random setting: the Vickrey cost of a shortest path in a complete graph or digraph with random edge weights; the V...
ICALP
2011
Springer
12 years 10 months ago
2011
Springer
We present an O( √ n log n)-approximation algorithm for the problem of finding the sparsest spanner of a given directed graph G on n vertices. A spanner of a graph is a sparse ...
CORR
2010
Springer
13 years 6 months ago
2010
Springer
Abstract Consider a random graph model where each possible edge e is present independently with some probability pe. Given these probabilities, we want to build a large/heavy match...
TAMC
2009
Springer
14 years 1 months ago
2009
Springer
We investigate a natural combinatorial optimization problem called the Label Cut problem. Given an input graph G with a source s and a sink t, the edges of G are classified into ...