Removing arbitrage from wagering mechanisms

Yiling Chen, Nikhil R. Devanur, David M. Pennock, Jennifer Wortman Vaughan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations


We observe that Lambert et al.'s [2008] family of weighted score wagering mechanisms admit arbitrage: participants can extract a guaranteed positive payoff by betting on any prediction within a certain range. In essence, participants leave free money on the table when they ''agree to disagree,'' and as a result, rewards don't necessarily go to the most informed and accurate participants. This observation suggests that when participants have immutable beliefs, it may be possible to design alternative mechanisms in which the center can make a profit by removing this arbitrage opportunity without sacrificing incentive properties such as individual rationality, incentive compatibility, and sybilproofness. We introduce a new family of wagering mechanisms called no-arbitrage wagering mechanisms that retain many of the positive properties of weighted score wagering mechanisms, but with the arbitrage opportunity removed. We show several structural results about the class of mechanisms that satisfy no-arbitrage in conjunction with other properties, and provide examples of no-arbitrage wagering mechanisms with interesting properties.

Original languageEnglish (US)
Title of host publicationEC 2014 - Proceedings of the 15th ACM Conference on Economics and Computation
PublisherAssociation for Computing Machinery
Number of pages18
ISBN (Print)9781450325653
StatePublished - 2014
Externally publishedYes
Event15th ACM Conference on Economics and Computation, EC 2014 - Palo Alto, CA, United States
Duration: Jun 8 2014Jun 12 2014

Publication series

NameEC 2014 - Proceedings of the 15th ACM Conference on Economics and Computation


Conference15th ACM Conference on Economics and Computation, EC 2014
Country/TerritoryUnited States
CityPalo Alto, CA

All Science Journal Classification (ASJC) codes

  • Computer Science (miscellaneous)


  • immutable beliefs
  • no arbitrage
  • scoring rules
  • wagering mechanisms


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