Truthful approximation mechanisms for scheduling selfish related machines

  • Authors:
  • Nir Andelman;Yossi Azar;Motti Sorani

  • Affiliations:
  • School of Computer Science, Tel Aviv University, Tel Aviv, Israel;School of Computer Science, Tel Aviv University, Tel Aviv, Israel;School of Computer Science, Tel Aviv University, Tel Aviv, Israel

  • Venue:
  • STACS'05 Proceedings of the 22nd annual conference on Theoretical Aspects of Computer Science
  • Year:
  • 2005

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Abstract

We consider the problem of scheduling jobs on related machines owned by selfish agents. Previously, Archer and Tardos showed a 2-approximation randomized mechanism which is truthful in expectation only (a weaker notion of truthfulness). We provide a 5-approximation deterministic truthful mechanism, the first deterministic truthful result for the problem. In case the number of machines is constant, we provide a deterministic Fully Polynomial Time Approximation Scheme (FPTAS) algorithm, and a suitable payment scheme that yields a truthful mechanism for the problem. This result, which is based on converting FPTAS to monotone FPTAS, improves a previous result of Auletta et al, who showed a (4+ε)-approximation truthful mechanism.