VCG-equivalent in expectation mechanism

Etsushi Fujita, Taiki Todo, Makoto Yokoo, Atsushi Iwasaki

Research output: Contribution to journalArticlepeer-review


In this paper, we develop a new class of iterative mechanisms called a VCG-equivalent in expectation mechanism. To guarantee that sincere strategies are an ex post equilibrium, it inevitably asks an irrelevant query, in which a participant has no incentive to answer the query sincerely. Such an irrelevant query causes unnecessary leakage of private information and a different incentive issue. In a VCG-equivalent in expectation mechanism, the mechanism achieves the same allocation as VCG, but the transfers are the same as VCG only in expectation. We show that in a VCG-equivalent in expectation mechanism, sincere strategies constitute a sequential equilibrium. Also, we develop a general procedure for constructing a VCG-equivalent in expectation mechanism that does not ask any irrelevant query. To demonstrate the applicability of this idea in a practical application, we develop a VCG-equivalent in expectation mechanism that can be applied to the Japanese 4G spectrum auction.

Original languageEnglish
Pages (from-to)156-167
Number of pages12
JournalComputer Software
Issue number3
Publication statusPublished - Aug 1 2014

All Science Journal Classification (ASJC) codes

  • Software


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