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» Improved Algorithms for the 2-Vertex Disjoint Paths Problem
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FOCS
2000
IEEE
15 years 3 months ago
Approximating the single source unsplittable min-cost flow problem
Abstract. In the single source unsplittable min-cost flow problem, commodities must be routed simultaneously from a common source vertex to certain destination vertices in a given ...
Martin Skutella
ECCC
2010
143views more  ECCC 2010»
14 years 9 months ago
Space-Efficient Algorithms for Reachability in Surface-Embedded Graphs
We consider the reachability problem for a certain class of directed acyclic graphs embedded on surfaces. Let G(m, g) be the class of directed acyclic graphs with m = m(n) source ...
Derrick Stolee, N. V. Vinodchandran
FPGA
2005
ACM
80views FPGA» more  FPGA 2005»
15 years 5 months ago
Simultaneous timing-driven placement and duplication
Logic duplication is an effective method for improving circuit performance. In this paper we present an algorithm named SPD that performs simultaneous placement and duplication to...
Gang Chen, Jason Cong
IPL
2002
118views more  IPL 2002»
14 years 11 months ago
Differential approximation results for the traveling salesman and related problems
This paper deals with the problem of constructing a Hamiltonian cycle of optimal weight, called TSP. We show that TSP is 2/3-differential approximable and can not be differential a...
Jérôme Monnot
AIPS
2006
15 years 1 months ago
Looking for Shortcuts: Infeasible Search Analysis for Oversubscribed Scheduling Problems
Searches that include both feasible and infeasible solutions have proved to be efficient algorithms for solving some scheduling problems. Researchers conjecture that these algorit...
Mark F. Rogers, Adele E. Howe, Darrell Whitley