False-Name-Proofness in Social Networks

  • Vincent Conitzer
  • Nicole Immorlica
  • Joshua Letchford
  • Kamesh Munagala
  • Liad Wagman
Conference paper

DOI: 10.1007/978-3-642-17572-5_17

Part of the Lecture Notes in Computer Science book series (LNCS, volume 6484)
Cite this paper as:
Conitzer V., Immorlica N., Letchford J., Munagala K., Wagman L. (2010) False-Name-Proofness in Social Networks. In: Saberi A. (eds) Internet and Network Economics. WINE 2010. Lecture Notes in Computer Science, vol 6484. Springer, Berlin, Heidelberg

Abstract

In mechanism design, the goal is to create rules for making a decision based on the preferences of multiple parties (agents), while taking into account that agents may behave strategically. An emerging phenomenon is to run such mechanisms on a social network; for example, Facebook recently allowed its users to vote on its future terms of use. One significant complication for such mechanisms is that it may be possible for a user to participate multiple times by creating multiple identities. Prior work has investigated the design of false-name-proof mechanisms, which guarantee that there is no incentive to use additional identifiers. Arguably, this work has produced mostly negative results. In this paper, we show that it is in fact possible to create good mechanisms that are robust to false-name-manipulation, by taking the social network structure into account. The basic idea is to exclude agents that are separated from trusted nodes by small vertex cuts. We provide key results on the correctness, optimality, and computational tractability of this approach.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Vincent Conitzer
    • 1
  • Nicole Immorlica
    • 2
  • Joshua Letchford
    • 1
  • Kamesh Munagala
    • 1
  • Liad Wagman
    • 3
  1. 1.Duke University 
  2. 2.Northwestern University 
  3. 3.Illinios Institute of Technology 

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