QoS-aware Multicommodity Flows and Transportation Planning

Authors George Tsaggouris, Christos Zaroliagis

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George Tsaggouris
Christos Zaroliagis

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George Tsaggouris and Christos Zaroliagis. QoS-aware Multicommodity Flows and Transportation Planning. In 6th Workshop on Algorithmic Methods and Models for Optimization of Railways (ATMOS'06). Open Access Series in Informatics (OASIcs), Volume 5, pp. 1-14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)


We consider the emph{QoS-aware Multicommodity Flow} problem, a natural generalization of the weighted multicommodity flow problem where the demands and commodity values are elastic to the Quality-of-Service characteristics of the underlying network. The problem is fundamental in transportation planning and also has important applications beyond the transportation domain. We provide a FPTAS for the QoS-aware Multicommodity Flow problem by building upon a Lagrangian relaxation method and a recent FPTAS for the non-additive shortest path problem.
  • Quality of service
  • multicommodity flows
  • fully polynomial approximation scheme
  • transportation planning


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