no code implementations • 8 Mar 2024 • Alfred Galichon, Simon Weber
In this paper, we examine matching models with imperfectly transferable utility (ITU).
no code implementations • 19 Feb 2024 • Alfred Galichon, Antoine Jacquet
Matching problems with linearly transferable utility (LTU) generalize the well-studied transferable utility (TU) case by relaxing the assumption that utility is transferred one-for-one within matched pairs.
no code implementations • 30 Sep 2023 • Zhaonan Qu, Alfred Galichon, Johan Ugander
For a broad class of choice and ranking models based on Luce's choice axiom, including the Bradley--Terry--Luce and Plackett--Luce models, we show that the associated maximum likelihood estimation problems are equivalent to a classic matrix balancing problem with target row and column sums.
no code implementations • 20 Sep 2023 • Liang Chen, Eugene Choo, Alfred Galichon, Simon Weber
We propose new results for the existence and uniqueness of a general nonparametric and nonseparable competitive equilibrium with substitutes.
no code implementations • 24 Apr 2023 • Alfred Galichon, Yu-Wei Hsieh, Maxime Sylvestre
We propose monotone comparative statics results for maximizers of submodular functions, as opposed to maximizers of supermodular functions as in the classical theory put forth by Veinott, Topkis, Milgrom, and Shannon among others.
no code implementations • 29 Jan 2023 • Arnaud Dupuy, Alfred Galichon
While our estimator is suited for a wide range of assignment problems, we provide an application to the estimation of the Value of a Statistical Life using compensating wage differentials for the risk of fatal injury on the job.
no code implementations • 9 Sep 2022 • Alfred Galichon, Larry Samuelson, Lucas Vernet
Galichon, Samuelson and Vernet (2022) introduced a class of problems, equilibrium flow problems, that nests several classical economic models such as bipartite matching models, minimum-cost flow problems and hedonic pricing models.
no code implementations • 14 Jul 2022 • Alfred Galichon, Larry Samuelson, Lucas Vernet
We introduce a notion of substitutability for correspondences and establish a monotone comparative static result, unifying results such as the inverse isotonicity of M-matrices, Berry, Gandhi and Haile's identification of demand systems, monotone comparative statics, and results on the structure of the core of matching games without transfers (Gale and Shapley) and with transfers (Demange and Gale).
no code implementations • 1 Apr 2022 • Alfred Galichon, Bernard Salanié
In this paper we propose two simple methods to estimate models of matching with transferable and separable utility introduced in Galichon and Salani\'e (2022).
no code implementations • 26 Nov 2021 • Odran Bonnet, Alfred Galichon, Yu-Wei Hsieh, Keith O'Hara, Matt Shum
The problem of demand inversion - a crucial step in the estimation of random utility discrete-choice models - is equivalent to the determination of stable outcomes in two-sided matching models.
no code implementations • 16 Sep 2021 • Alfred Galichon, Bernard Salanié
This paper provides an introduction to structural estimation methods for matching markets with transferable utility.
no code implementations • 24 Aug 2021 • Alfred Galichon
We show the role that an important equation first studied by Fritz John plays in mechanism design.
no code implementations • 14 Aug 2021 • Alfred Galichon, Octavia Ghelfi, Marc Henry
We highlight the tension between stability and equality in non transferable utility matching.
no code implementations • 9 Jul 2021 • Alfred Galichon
Optimal transport has become part of the standard quantitative economics toolbox.
no code implementations • 4 Jun 2021 • Alfred Galichon, Bernard Salanié
We investigate a model of one-to-one matching with transferable utility and general unobserved heterogeneity.
no code implementations • 25 Feb 2021 • Guillaume Carlier, Victor Chernozhukov, Gwendoline de Bie, Alfred Galichon
In this paper, we first revisit the Koenker and Bassett variational approach to (univariate) quantile regression, emphasizing its link with latent factor representations and correlation maximization problems.
no code implementations • 25 Feb 2021 • Alfred Galichon, Bernard Salanié
We investigate in this paper the theory and econometrics of optimal matchings with competing criteria.
no code implementations • 24 Feb 2021 • Alfred Galichon, Marc Henry
We provide a test for the specification of a structural model without identifying assumptions.
no code implementations • 24 Feb 2021 • Alfred Galichon, Marc Henry
We propose a computationally feasible way of deriving the identified features of models with multiple equilibria in pure or mixed strategies.
no code implementations • 15 Feb 2021 • Arnaud Dupuy, Alfred Galichon
In the context of the Beckerian theory of marriage, when men and women match on a single-dimensional index that is the weighted sum of their respective multivariate attributes, many papers in the literature have used linear canonical correlation, and related techniques, in order to estimate these weights.
no code implementations • 15 Feb 2021 • Arnaud Dupuy, Alfred Galichon, Marc Henry
This paper contributes to the literature on hedonic models in two ways.
no code implementations • 15 Feb 2021 • Arnaud Dupuy, Alfred Galichon
Which and how many attributes are relevant for the sorting of agents in a matching market?
no code implementations • 12 Feb 2021 • Edoardo Ciscato, Alfred Galichon, Marion Goussé
In this paper, we build an equilibrium model of same-sex marriage market which allows for straightforward identification of the gains to marriage.
no code implementations • 12 Feb 2021 • Pierre-André Chiappori, Alfred Galichon, Bernard Salanié
In many economic contexts, agents from a same population team up to better exploit their human capital.
no code implementations • 8 Feb 2021 • Arthur Charpentier, Alfred Galichon, Marc Henry
We revisit Machina's local utility as a tool to analyze attitudes to multivariate risks.
no code implementations • 8 Feb 2021 • Ivar Ekeland, Alfred Galichon, Marc Henry
A general framework is given to analyze the falsifiability of economic models based on a sample of their observable components.
no code implementations • 8 Feb 2021 • Ivar Ekeland, Alfred Galichon, Marc Henry
We propose a multivariate extension of a well-known characterization by S. Kusuoka of regular and coherent risk measures as maximal correlation functionals.
no code implementations • 8 Feb 2021 • Federico Echenique, Alfred Galichon
We characterize solutions for two-sided matching, both in the transferable and in the nontransferable-utility frameworks, using a cardinal formulation.
no code implementations • 8 Feb 2021 • Raicho Bojilov, Alfred Galichon
This paper provides closed-form formulas for a multidimensional two-sided matching problem with transferable utility and heterogeneity in tastes.
no code implementations • 8 Feb 2021 • Alfred Galichon, Marc Henry
We propose an easily implementable test of the validity of a set of theoretical restrictions on the relationship between economic variables, which do not necessarily identify the data generating process.
no code implementations • 8 Feb 2021 • Damien Bosc, Alfred Galichon
This article proposes a generalized notion of extreme multivariate dependence between two random vectors which relies on the extremality of the cross-covariance matrix between these two vectors.
no code implementations • 8 Feb 2021 • Alfred Galichon, Marc Henry
We propose a methodology for constructing confidence regions with partially identified models of general form.
no code implementations • 7 Feb 2021 • Alfred Galichon
We provide a geometric formulation of the problem of identification of the matching surplus function and we show how the estimation problem can be solved by the introduction of a generalized entropy function over the set of matchings.
no code implementations • 4 Feb 2021 • Alfred Galichon, Bernard Salanié
We present a class of one-to-one matching models with perfectly transferable utility.
no code implementations • 4 Feb 2021 • Alfred Galichon, Marc Henry
We propose a multivariate extension of Yaari's dual theory of choice under risk.
no code implementations • 4 Feb 2021 • Ivar Ekeland, Alfred Galichon
This paper exhibits a duality between the theory of Revealed Preference of Afriat and the housing allocation problem of Shapley and Scarf.
no code implementations • 4 Feb 2021 • Alfred Galichon
I show that the structure of the firm is not neutral in respect to regulatory capital budgeted under rules which are based on the Value-at-Risk.
no code implementations • 3 Feb 2021 • Liang Chen, Eugene Choo, Alfred Galichon, Simon Weber
We argue that models coming from a variety of fields, such as matching models and discrete choice models among others, share a common structure that we call matching function equilibria with partial assignment.
no code implementations • 2 Feb 2021 • Alfred Galichon
This paper surveys recent applications of methods from the theory of optimal transport to econometric problems.
no code implementations • 27 Sep 2017 • Victor Chernozhukov, Alfred Galichon, Marc Henry, Brendan Pass
This paper derives conditions under which preferences and technology are nonparametrically identified in hedonic equilibrium models, where products are differentiated along more than one dimension and agents are characterized by several dimensions of unobserved heterogeneity.
1 code implementation • 18 Jun 2014 • Guillaume Carlier, Victor Chernozhukov, Alfred Galichon
Under correct specification, the notion produces strong representation, $Y=\beta \left(U\right) ^\top f(Z)$, for $f(Z)$ denoting a known set of transformations of $Z$, where $u \longmapsto \beta(u)^\top f(Z)$ is a monotone map, the gradient of a convex function, and the quantile regression coefficients $u \longmapsto \beta(u)$ have the interpretations analogous to that of the standard scalar quantile regression.
Methodology 49Q20, 49Q10, 90B20