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NETWORKS
2006
13 years 7 months ago
Lower bounds for the relative greedy algorithm for approximating Steiner trees
Abstract. The Steiner tree problem is to find a shortest subgraph that spans a given set of vertices in a graph. This problem is known to be NP-hard and it is well known that a pol...
Stefan Hougardy, Stefan Kirchner
ISPD
2004
ACM
189views Hardware» more  ISPD 2004»
14 years 29 days ago
Almost optimum placement legalization by minimum cost flow and dynamic programming
VLSI placement tools usually work in two steps: First, the cells that have to be placed are roughly spread out over the chip area ignoring disjointness (global placement). Then, i...
Ulrich Brenner, Anna Pauli, Jens Vygen
CORR
2008
Springer
132views Education» more  CORR 2008»
13 years 7 months ago
Betweenness Centrality : Algorithms and Lower Bounds
One of the most fundamental problems in large-scale network analysis is to determine the importance of a particular node in a network. Betweenness centrality is the most widely us...
Shiva Kintali
ICCV
2001
IEEE
14 years 9 months ago
Fast Algorithm for Nearest Neighbor Search Based on a Lower Bound Tree
Yong-Sheng Chen, Yi-Ping Hung, Chiou-Shann Fuh