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Efficient graph topologies in network routing games

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  • Epstein, Amir
  • Feldman, Michal
  • Mansour, Yishay

Abstract

A topology is efficient for network games if, for any game over it, every Nash equilibrium is socially optimal. It is well known that many topologies are not efficient for network games. We characterize efficient topologies in network games with a finite set of players, each wishing to transmit an atomic unit of unsplittable flow. We distinguish between two classes of atomic network routing games. In network congestion games a player's cost is the sum of the costs of the edges it traverses, while in bottleneck routing games, it is its maximum edge cost. In both classes, the social cost is the maximum cost among the players' costs. We show that for symmetric network congestion games the efficient topologies are Extension Parallel networks, while for symmetric bottleneck routing games the efficient topologies are Series Parallel networks. In the asymmetric case the efficient topologies include only trees with parallel edges.

Suggested Citation

  • Epstein, Amir & Feldman, Michal & Mansour, Yishay, 2009. "Efficient graph topologies in network routing games," Games and Economic Behavior, Elsevier, vol. 66(1), pages 115-125, May.
  • Handle: RePEc:eee:gamebe:v:66:y:2009:i:1:p:115-125
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    References listed on IDEAS

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    1. Igal Milchtaich, 2005. "Topological Conditions for Uniqueness of Equilibrium in Networks," Mathematics of Operations Research, INFORMS, vol. 30(1), pages 225-244, February.
    2. Roughgarden, Tim & Tardos, Eva, 2004. "Bounding the inefficiency of equilibria in nonatomic congestion games," Games and Economic Behavior, Elsevier, vol. 47(2), pages 389-403, May.
    3. Holzman, Ron & Law-Yone, Nissan, 1997. "Strong Equilibrium in Congestion Games," Games and Economic Behavior, Elsevier, vol. 21(1-2), pages 85-101, October.
    4. Holzman, Ron & Law-yone (Lev-tov), Nissan, 2003. "Network structure and strong equilibrium in route selection games," Mathematical Social Sciences, Elsevier, vol. 46(2), pages 193-205, October.
    5. Milchtaich, Igal, 2006. "Network topology and the efficiency of equilibrium," Games and Economic Behavior, Elsevier, vol. 57(2), pages 321-346, November.
    6. Richard Steinberg & Willard I. Zangwill, 1983. "The Prevalence of Braess' Paradox," Transportation Science, INFORMS, vol. 17(3), pages 301-318, August.
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    Cited by:

    1. Satoru Fujishige & Michel X. Goemans & Tobias Harks & Britta Peis & Rico Zenklusen, 2017. "Matroids Are Immune to Braess’ Paradox," Mathematics of Operations Research, INFORMS, vol. 42(3), pages 745-761, August.
    2. T. Werth & H. Sperber & S. Krumke, 2014. "Computation of equilibria and the price of anarchy in bottleneck congestion games," Central European Journal of Operations Research, Springer;Slovak Society for Operations Research;Hungarian Operational Research Society;Czech Society for Operations Research;Österr. Gesellschaft für Operations Research (ÖGOR);Slovenian Society Informatika - Section for Operational Research;Croatian Operational Research Society, vol. 22(4), pages 687-712, December.
    3. Andrzej Grzybowski, 2009. "A Note On A Single Vehicle And One Destination Routing Problem And Its Game-Theoretic Models," Advanced Logistic systems, University of Miskolc, Department of Material Handling and Logistics, vol. 3(1), pages 71-76, December.
    4. Thanasis Lianeas & Evdokia Nikolova & Nicolas E. Stier-Moses, 2019. "Risk-Averse Selfish Routing," Mathematics of Operations Research, INFORMS, vol. 44(1), pages 38-57, February.
    5. Wang, Aihu & Tang, Yuanhua & Mohmand, Yasir Tariq & Xu, Pei, 2022. "Modifying link capacity to avoid Braess Paradox considering elastic demand," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 605(C).
    6. Xujin Chen & Zhuo Diao & Xiaodong Hu, 2022. "On weak Pareto optimality of nonatomic routing networks," Journal of Combinatorial Optimization, Springer, vol. 44(3), pages 1705-1723, October.
    7. Xujin Chen & Zhuo Diao & Xiaodong Hu, 0. "On weak Pareto optimality of nonatomic routing networks," Journal of Combinatorial Optimization, Springer, vol. 0, pages 1-19.
    8. Igal Milchtaich, 2021. "Internalization of social cost in congestion games," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 71(2), pages 717-760, March.
    9. Leah Epstein & Sven O. Krumke & Asaf Levin & Heike Sperber, 2011. "Selfish bin coloring," Journal of Combinatorial Optimization, Springer, vol. 22(4), pages 531-548, November.

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