447 search results - page 11 / 90 » Approximation Algorithms for Directed Steiner Problems |
LATIN
2010
Springer
14 years 1 months ago
2010
Springer
In this paper, we consider Steiner forest and its generalizations, prize-collecting Steiner forest and k-Steiner forest, when the vertices of the input graph are points in the Euc...
DAM
1999
13 years 8 months ago
1999
This paper deals with the problem of constructing Steiner trees of minimum weight with diameter bounded by d, spanning a given set of vertices in a graph. Exact solutions or logar...
INFOCOM
2005
IEEE
14 years 2 months ago
2005
IEEE
— We present decentralized algorithms that compute minimum-cost subgraphs for establishing multicast connections in networks that use coding. These algorithms, coupled with exist...
ESA
2003
Springer
14 years 1 months ago
2003
Springer
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
GECCO
2004
Springer
14 years 1 months ago
2004
Springer
The prize-collecting Steiner tree problem on a graph with edge costs and vertex profits asks for a subtree minimizing the sum of the total cost of all edges in the subtree plus th...