192 search results - page 21 / 39 » A Constant-Factor Approximation Algorithm for the Multicommo... |
MFCS
2007
Springer
14 years 2 months ago
2007
Springer
Consider a rooted directed acyclic graph G = (V, E) with root r, representing a collection V of web pages connected via a set E of hyperlinks. Each node v is associated with the pr...
ICCAD
2006
IEEE
14 years 5 months ago
2006
IEEE
We present the first efficient approach to global routing that takes spacing-dependent costs into account and provably finds a near-optimum solution including these costs. We sh...
APPROX
2010
Springer
13 years 10 months ago
2010
Springer
We consider the question: What is the maximum flow achievable in a network if the flow must be decomposable into a collection of edgedisjoint paths? Equivalently, we wish to find a...
SWAT
2010
Springer
13 years 7 months ago
2010
Springer
We study the problem of minimizing the diameter of a graph by adding k shortcut edges, for speeding up communication in an existing network design. We develop constant-factor appro...
FOCS
2006
IEEE
14 years 2 months ago
2006
IEEE
Given an undirected hypergraph and a subset of vertices S ⊆ V with a specified root vertex r ∈ S, the STEINER ROOTED-ORIENTATION problem is to find an orientation of all the...