We study two-sided markets with heterogeneous, privately informed agents who gain from being matched with better partners from the other side. Agents are matched through an intermediary. Our main results quantify the relative attractiveness of a coarse matching scheme consisting of two classes of agents on each side, in terms of matching surplus (output), the intermediary's revenue, and the agents' welfare (defined by the total surplus minus payments to the intermediary). In a nutshell, our philosophy is that, if the worst-case scenario under coarse matching is not too bad relative to what is achievable by more complex, finer schemes, a coarse matching scheme will turn out to be preferable once the various transaction costs associated with fine schemes are taken into account. Similarly, coarse matching schemes can be significantly better than completely random matching, requiring only a minimal amount of information.
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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number
6041.
Find related papers by JEL classification: C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory D42 - Microeconomics - - Market Structure and Pricing - - - Monopoly D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information L15 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Information and Product Quality
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Jean-Charles Rochet Author-Email: rochet@cict.fr Author-Workplace-Name: IDEI, University of Toulouse & Jean Tirole Author-Email: tirole@cict.fr Author-Workplace-Name: IDEI, University of Toulouse, 2006.
"Two-Sided Markets: A Progress Report,"
RAND Journal of Economics,
The RAND Corporation, vol. 37(3), pages 645-667, Autumn.
Heidrun C. Hoppe & Benny Moldovanu & Aner Sela, 2005.
"The Theory of Assortative Matching Based on Costly Signals,"
Discussion Papers
85, SFB/TR 15 Governance and the Efficiency of Economic Systems, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
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