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» On-line Generalized Steiner Problem
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SODA
1996
ACM
92views Algorithms» more  SODA 1996»
13 years 8 months ago
On-line Generalized Steiner Problem
Baruch Awerbuch, Yossi Azar, Yair Bartal
SODA
2012
ACM
225views Algorithms» more  SODA 2012»
11 years 10 months ago
Approximating rooted Steiner networks
The Directed Steiner Tree (DST) problem is a cornerstone problem in network design. We focus on the generalization of the problem with higher connectivity requirements. The proble...
Joseph Cheriyan, Bundit Laekhanukit, Guyslain Nave...
ICALP
2009
Springer
14 years 7 months ago
Node-Weighted Steiner Tree and Group Steiner Tree in Planar Graphs
We improve the approximation ratios for two optimization problems in planar graphs. For node-weighted Steiner tree, a classical network-optimization problem, the best achievable ap...
Erik D. Demaine, MohammadTaghi Hajiaghayi, Philip ...
SODA
2000
ACM
114views Algorithms» more  SODA 2000»
13 years 8 months ago
The rectilinear Steiner arborescence problem is NP-complete
Given a set P of points in the first quadrant, a Rectilinear Steiner Arborescence (RSA) is a directed tree rooted at the origin, containing all points in P, and composed solely of...
Weiping Shi, Chen Su
IPCO
2007
94views Optimization» more  IPCO 2007»
13 years 9 months ago
Infrastructure Leasing Problems
Consider the following Steiner Tree leasing problem. Given a graph G = (V, E) with root r, and a sequence of terminal sets Dt ⊆ V for each day t ∈ [T]. A feasible solution to t...
Barbara M. Anthony, Anupam Gupta