Tradeoffs in Worst-Case Equilibria

Baruch Awerbuch, Yossi Azar, Yossi Richter, Dekel Tsur

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


We investigate the problem of routing traffic through a congested network in an environment of non-cooperative users. We use the worst-case coordination ratio suggested by Koutsoupias and Papadimitriou to measure the performance degradation due to the lack of a centralized traffic regulating authority. We provide a full characterization of the worst-case coordination ratio in the restricted assignment and unrelated parallel links model. In particular, we quantify the tradeoff between the "negligibility" of the traffic controlled by each user and the worst-case coordination ratio. We analyze both pure and mixed strategies systems and identify the range where their performance is similar.

Original languageEnglish
Pages (from-to)200-209
Number of pages10
JournalTheoretical Computer Science
Issue number2-3
StatePublished - 1 Sep 2006


  • Restricted assignment
  • Unrelated links
  • Worst-case coordination ratio

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


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