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» On the Approximability of the Steiner Tree Problem
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HM
2007
Springer
137views Optimization» more  HM 2007»
14 years 3 months ago
A Hybrid VNS for Connected Facility Location
The connected facility location (ConFL) problem generalizes the facility location problem and the Steiner tree problem in graphs. Given a graph G = (V, E), a set of customers D ⊆...
Ivana Ljubic
TCAD
2008
128views more  TCAD 2008»
13 years 8 months ago
Obstacle-Avoiding Rectilinear Steiner Tree Construction Based on Spanning Graphs
Given a set of pins and a set of obstacles on a plane, an obstacle-avoiding rectilinear Steiner minimal tree (OARSMT) connects these pins, possibly through some additional points (...
Chung-Wei Lin, Szu-Yu Chen, Chi-Feng Li, Yao-Wen C...
ICALP
2005
Springer
14 years 2 months ago
The Generalized Deadlock Resolution Problem
In this paper we initiate the study of the AND-OR directed feedback vertex set problem from the viewpoint of approximation algorithms. This AND-OR feedback vertex set problem is m...
Kamal Jain, Mohammad Taghi Hajiaghayi, Kunal Talwa...
ENDM
2010
101views more  ENDM 2010»
13 years 8 months ago
Strong Lower Bounds for a Survivable Network Design Problem
We consider a generalization of the Prize Collecting Steiner Tree Problem on a graph with special redundancy requirements on a subset of the customer nodes suitable to model a rea...
Markus Leitner, Günther R. Raidl
FOCS
2008
IEEE
14 years 3 months ago
Degree Bounded Network Design with Metric Costs
Given a complete undirected graph, a cost function on edges and a degree bound B, the degree bounded network design problem is to find a minimum cost simple subgraph with maximum...
Yuk Hei Chan, Wai Shing Fung, Lap Chi Lau, Chun Ko...