A Quantitative Version of the Gibbard–Satterthwaite Theorem for Three Alternatives

Autor: Noam Nisan, Ehud Friedgut, Nathan Keller, Gil Kalai
Rok vydání: 2011
Předmět:
Zdroj: SIAM Journal on Computing. 40:934-952
ISSN: 1095-7111
0097-5397
Popis: The Gibbard-Satterthwaite theorem states that every nondictatorial election rule among at least three alternatives can be strategically manipulated. We prove a quantitative version of the Gibbard-Satterthwaite theorem: a random manipulation by a single random voter will succeed with a nonnegligible probability for any election rule among three alternatives that is far from being a dictatorship and from having only two alternatives in its range.
Databáze: OpenAIRE