Journal
ECONOMETRICS JOURNAL
Volume 24, Issue 3, Pages 399-416Publisher
OXFORD UNIV PRESS
DOI: 10.1093/ectj/utab014
Keywords
Moment inequality; constrained optimization; MPEC; MPCC; partial identification
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For moment inequality models, utilizing equivalent formulations can effectively compute the identified set and its confidence set, saving considerable computing resources, and being user-friendly and easy to implement.
Inference for moment inequality models is computationally demanding and often involves time-consuming grid search. By exploiting the equivalent formulations between unconstrained and constrained optimization, we establish new ways to compute the identified set and its confidence set in moment inequality models that overcome some of these computational hurdles. In simulations, using both linear and nonlinear moment inequality models, we show that our method significantly improves the solution quality and save considerable computing resources relative to conventional grid search. Our methods are user-friendly and can be implemented using a variety of canned software packages.
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