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SIAMDM
2000
159views more  SIAMDM 2000»
13 years 4 months ago
Approximating Fractional Multicommodity Flow Independent of the Number of Commodities
Abstract. We describe fully polynomial time approximation schemes for various multicommodity flow problems in graphs with m edges and n vertices. We present the first approximation...
Lisa Fleischer
FOCS
1998
IEEE
13 years 9 months ago
Faster and Simpler Algorithms for Multicommodity Flow and Other Fractional Packing Problems
This paper considers the problem of designing fast, approximate, combinatorial algorithms for multicommodity flows and other fractional packing problems. We provide a different ap...
Naveen Garg, Jochen Könemann
STOC
2010
ACM
186views Algorithms» more  STOC 2010»
13 years 9 months ago
Faster approximation schemes for fractional multicommodity flow problems via dynamic graph algorithms
We combine the work of Garg and K¨onemann, and Fleischer with ideas from dynamic graph algorithms to obtain faster (1 − ε)-approximation schemes for various versions of the mu...
Aleksander Madry
FOCS
2009
IEEE
13 years 11 months ago
Approximation Algorithms for Multicommodity-Type Problems with Guarantees Independent of the Graph Size
— Linial, London and Rabinovich [16] and Aumann and Rabani [3] proved that the min-cut max-flow ratio for general maximum concurrent flow problems (when there are k commodities...
Ankur Moitra
VECPAR
2000
Springer
13 years 8 months ago
A Parallel Implementation of an Interior-Point Algorithm for Multicommodity Network Flows
A parallel implementation of the specialized interior-point algorithm for multicommodity network flows introduced in [5] is presented. In this algorithm, the positive definite syst...
Jordi Castro, Antonio Frangioni