Hybrid voting protocols and hardness of manipulation

  • Authors:
  • Edith Elkind;Helger Lipmaa

  • Affiliations:
  • Department of Computer Science, University of Warwick, U.K.;Cybernetica AS and University of Tartu, Estonia

  • Venue:
  • ISAAC'05 Proceedings of the 16th international conference on Algorithms and Computation
  • Year:
  • 2005

Quantified Score

Hi-index 0.02

Visualization

Abstract

This paper addresses the problem of constructing voting protocols that are hard to manipulate. We describe a general technique for obtaining a new protocol by combining two or more base protocols, and study the resulting class of (vote-once) hybrid voting protocols, which also includes most previously known manipulation-resistant protocols. We show that for many choices of underlying base protocols, including some that are easily manipulable, their hybrids are NP-hard to manipulate, and demonstrate that this method can be used to produce manipulation-resistant protocols with unique combinations of useful features.