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» On the Approximability of the Steiner Tree Problem
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TON
2002
144views more  TON 2002»
13 years 8 months ago
Algorithms for provisioning virtual private networks in the hose model
Virtual Private Networks (VPNs) provide customers with predictable and secure network connections over a shared network. The recently proposed hose model for VPNs allows for great...
Amit Kumar, Rajeev Rastogi, Abraham Silberschatz, ...
SDM
2012
SIAM
224views Data Mining» more  SDM 2012»
11 years 11 months ago
Nearest-Neighbor Search on a Time Budget via Max-Margin Trees
Many high-profile applications pose high-dimensional nearest-neighbor search problems. Yet, it still remains difficult to achieve fast query times for state-of-the-art approache...
Parikshit Ram, Dongryeol Lee, Alexander G. Gray
PDCAT
2005
Springer
14 years 2 months ago
Approximating Spanning Trees with Inner Nodes Cost
We consider the practical NP-complete problem of finding a minimum weight spanning tree with both edge weights and inner nodes weights. We present two polynomial time algorithms ...
Rudolf Fleischer, Qi Ge, Jian Li, Shijun Tian, Hai...
ASPDAC
2009
ACM
184views Hardware» more  ASPDAC 2009»
14 years 26 days ago
FastRoute 4.0: global router with efficient via minimization
The number of vias generated during the global routing stage is a critical factor for the yield of final circuits. However, most global routers only approach the problem by chargin...
Yue Xu, Yanheng Zhang, Chris Chu
COMPGEOM
2000
ACM
14 years 1 months ago
When crossings count - approximating the minimum spanning tree
We present an (1+ε)-approximation algorithm for computing the minimum-spanning tree of points in a planar arrangement of lines, where the metric is the number of crossings betwee...
Sariel Har-Peled, Piotr Indyk