The Law of Large Numbers for Large Stable Matchings

Fuente: arXiv
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Autores principales: Schwartz, Jacob, Song, Kyungchul
Formato: Preprint
Publicado: 2021
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author Schwartz, Jacob
Song, Kyungchul
author_facet Schwartz, Jacob
Song, Kyungchul
contents In many empirical studies of a large two-sided matching market (such as in a college admissions problem), the researcher performs statistical inference under the assumption that they observe a random sample from a large matching market. In this paper, we consider a setting in which the researcher observes either all or a nontrivial fraction of outcomes from a stable matching. We establish a concentration inequality for empirical matching probabilities assuming strong correlation among the colleges' preferences while allowing students' preferences to be fully heterogeneous. Our concentration inequality yields laws of large numbers for the empirical matching probabilities and other statistics commonly used in empirical analyses of a large matching market. To illustrate the usefulness of our concentration inequality, we prove consistency for estimators of conditional matching probabilities and measures of positive assortative matching.
format Preprint
id arxiv_https___arxiv_org_abs_2101_00399
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle The Law of Large Numbers for Large Stable Matchings
Schwartz, Jacob
Song, Kyungchul
Econometrics
In many empirical studies of a large two-sided matching market (such as in a college admissions problem), the researcher performs statistical inference under the assumption that they observe a random sample from a large matching market. In this paper, we consider a setting in which the researcher observes either all or a nontrivial fraction of outcomes from a stable matching. We establish a concentration inequality for empirical matching probabilities assuming strong correlation among the colleges' preferences while allowing students' preferences to be fully heterogeneous. Our concentration inequality yields laws of large numbers for the empirical matching probabilities and other statistics commonly used in empirical analyses of a large matching market. To illustrate the usefulness of our concentration inequality, we prove consistency for estimators of conditional matching probabilities and measures of positive assortative matching.
title The Law of Large Numbers for Large Stable Matchings
topic Econometrics
url https://arxiv.org/abs/2101.00399