9 search results - page 1 / 2 » New Geometry-Inspired Relaxations and Algorithms for the Met... |
IPCO
2008
13 years 5 months ago
2008
Abstract. Determining the integrality gap of the bidirected cut relaxation for the metric Steiner tree problem, and exploiting it algorithmically, is a long-standing open problem. ...
ICCAD
1999
IEEE
13 years 8 months ago
1999
IEEE
The minimum rectilinear Steiner tree (RST) problem is one of the fundamental problems in the field of electronic design automation. The problem is NP-hard, and much work has been ...
SODA
2003
ACM
13 years 5 months ago
2003
ACM
The natural relaxation for the Group Steiner Tree problem, as well as for its generalization, the Directed Steiner Tree problem, is a flow-based linear programming relaxation. We...
IPCO
2001
13 years 5 months ago
2001
Garg [10] gives two approximation algorithms for the minimum-cost tree spanning k vertices in an undirected graph. Recently Jain and Vazirani [16] discovered primal-dual approxima...
GECCO
2004
Springer
13 years 9 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...