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The Robustness of Robust Implementation

15 Pages Posted: 22 Dec 2010  

Moritz Meyer-Ter-Vehn

Independent

Stephen Morris

Princeton University - Department of Economics

Date Written: June 22, 2010

Abstract

We show that a mechanism that robustly implements optimal outcomes in a one-dimensional supermodular environment continues to robustly implement ε-optimal outcomes in all close-by environments. Robust implementation of ε-optimal outcomes is thus robust to small perturbations of the environment. This is in contrast to ex-post implementation which is not robust in this sense as only trivial social choice functions are ex-post implementable in generic environments.

Suggested Citation

Meyer-Ter-Vehn, Moritz and Morris, Stephen, The Robustness of Robust Implementation (June 22, 2010). Economic Theory Center Working Paper No. 002-2010. Available at SSRN: https://ssrn.com/abstract=1729268 or http://dx.doi.org/10.2139/ssrn.1729268

Moritz Meyer-Ter-Vehn (Contact Author)

Independent ( email )

Sonnenbichlweg 9
85748 Garching
Germany

Stephen Edward Morris

Princeton University - Department of Economics ( email )

Princeton, NJ 08544-1021
United States

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