Set identification in models with multiple equilibria

Alfred Galichon, Marc Henry

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

We propose a computationally feasible way of deriving the identified features of models with multiple equilibria in pure or mixed strategies. It is shown that in the case of Shapley regular normal form games, the identified set is characterized by the inclusion of the true data distribution within the core of a Choquet capacity, which is interpreted as the generalized likelihood of the model. In turn, this inclusion is characterized by a finite set of inequalities and efficient and easily implementable combinatorial methods are described to check them. In all normal form games, the identified set is characterized in terms of the value of a submodular or convex optimization program. Efficient algorithms are then given and compared to check inclusion of a parameter in this identified set. The latter are illustrated with family bargaining games and oligopoly entry games.

Original languageEnglish (US)
Article numberrdr008
Pages (from-to)1264-1298
Number of pages35
JournalReview of Economic Studies
Volume78
Issue number4
DOIs
StatePublished - Oct 2011

All Science Journal Classification (ASJC) codes

  • Economics and Econometrics

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