Semi-nonparametric models of multidimensional matching: an optimal transport approach

Dongwoo Kim and Young Jun Lee

Papers from arXiv.org

Abstract: This paper develops a set of empirically tractable and flexible sieve estimators for semi-nonparametric multidimensional matching models with transferable utility, focusing on worker-job matching. We generalize the parametric quadratic-Gaussian framework employed by Bojilov and Galichon (2016) and Lindenlaub (2017), which relies on joint normality of observed characteristics. We allow unrestricted distributions of characteristics and show identification of the production technology and the equilibrium wage and matching functions using optimal transport theory. Given identification, we propose efficient, consistent, and asymptotically normal sieve estimators. We revisit Lindenlaub's empirical application and show that, between 1990 and 2010, the U.S. economy experienced much larger technological progress favoring cognitive abilities than the original findings suggest. Furthermore, our flexible model specifications provide a significantly better fit for patterns in the evolution of wage inequality.

Date: 2024-05, Revised 2026-05
New Economics Papers: this item is included in nep-ecm
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Working Paper: Semi-nonparametric models of multidimensional matching: an optimal transport approach (2024)
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