Asynchronous Congestion Games

  • Authors:
  • Michal Penn;Maria Polukarov;Moshe Tennenholtz

  • Affiliations:
  • Faculty of Industrial Engineering and Management, Technion, Haifa, Israel 32000;School of Electronics and Computer Science, University of Southampton, Southampton, UK SO17 1BJ;Faculty of Industrial Engineering and Management, Technion, Haifa, Israel 32000 and Microsoft Israel R&D Center,

  • Venue:
  • Graph Theory, Computational Intelligence and Thought
  • Year:
  • 2009

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Abstract

We introduce a new class of games, asynchronous congestion games (ACGs). In an ACG, each player has a task that can be carried out by any element of a set of resources, and each resource executes its assigned tasks in a random order. Each player's aim is to minimize his expected cost which is the sum of two terms --- the sum of the fixed costs over the set of his utilized resources and the expected cost of his task execution. The cost of a player's task execution is determined by the earliest time his task is completed, and thus it might be beneficial for him to assign his task to several resources. We show the existence of pure strategy Nash equilibria in ACGs. Moreover, we present a polynomial time algorithm for finding such an equilibrium in a given ACG.