Search Results for author: Alfred Galichon

Found 41 papers, 1 papers with code

Matching under Imperfectly Transferable Utility

no code implementations8 Mar 2024 Alfred Galichon, Simon Weber

In this paper, we examine matching models with imperfectly transferable utility (ITU).

The matching problem with linear transfers is equivalent to a hide-and-seek game

no code implementations19 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.

On Sinkhorn's Algorithm and Choice Modeling

no code implementations30 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.

Existence of a Competitive Equilibrium with Substitutes, with Applications to Matching and Discrete Choice Models

no code implementations20 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.

Discrete Choice Models

Monotone comparative statics for submodular functions, with an application to aggregated deferred acceptance

no code implementations24 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.

Combinatorial Optimization

A Note on the Estimation of Job Amenities and Labor Productivity

no code implementations29 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.

The Existence of Equilibrium Flows

no code implementations9 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.

Monotone Comparative Statics for Equilibrium Problems

no code implementations14 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).

Estimating Separable Matching Models

no code implementations1 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).

Yogurts Choose Consumers? Estimation of Random-Utility Models via Two-Sided Matching

no code implementations26 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.

Discrete Choice Models

Structural Estimation of Matching Markets with Transferable Utility

no code implementations16 Sep 2021 Alfred Galichon, Bernard Salanié

This paper provides an introduction to structural estimation methods for matching markets with transferable utility.

Fritz John's equation in mechanism design

no code implementations24 Aug 2021 Alfred Galichon

We show the role that an important equation first studied by Fritz John plays in mechanism design.

Stable and extremely unequal

no code implementations14 Aug 2021 Alfred Galichon, Octavia Ghelfi, Marc Henry

We highlight the tension between stability and equality in non transferable utility matching.

Cupid's Invisible Hand: Social Surplus and Identification in Matching Models

no code implementations4 Jun 2021 Alfred Galichon, Bernard Salanié

We investigate a model of one-to-one matching with transferable utility and general unobserved heterogeneity.

Vector quantile regression and optimal transport, from theory to numerics

no code implementations25 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.

regression

Matching with Trade-offs: Revealed Preferences over Competing Characteristics

no code implementations25 Feb 2021 Alfred Galichon, Bernard Salanié

We investigate in this paper the theory and econometrics of optimal matchings with competing criteria.

Econometrics

Inference in Incomplete Models

no code implementations24 Feb 2021 Alfred Galichon, Marc Henry

We provide a test for the specification of a structural model without identifying assumptions.

Set Identification in Models with Multiple Equilibria

no code implementations24 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.

Canonical Correlation and Assortative Matching: A Remark

no code implementations15 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.

Entropy methods for identifying hedonic models

no code implementations15 Feb 2021 Arnaud Dupuy, Alfred Galichon, Marc Henry

This paper contributes to the literature on hedonic models in two ways.

Personality Traits and the Marriage Market

no code implementations15 Feb 2021 Arnaud Dupuy, Alfred Galichon

Which and how many attributes are relevant for the sorting of agents in a matching market?

Like Attract Like? A Structural Comparison of Homogamy across Same-Sex and Different-Sex Households

no code implementations12 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.

On Human Capital and Team Stability

no code implementations12 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.

Local Utility and Multivariate Risk Aversion

no code implementations8 Feb 2021 Arthur Charpentier, Alfred Galichon, Marc Henry

We revisit Machina's local utility as a tool to analyze attitudes to multivariate risks.

Optimal transportation and the falsifiability of incompletely specified economic models

no code implementations8 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.

Comonotonic measures of multivariate risks

no code implementations8 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.

Ordinal and cardinal solution concepts for two-sided matching

no code implementations8 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.

Vocal Bursts Valence Prediction

Matching in Closed-Form: Equilibrium, Identification, and Comparative Statics

no code implementations8 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.

A test of non-identifying restrictions and confidence regions for partially identified parameters

no code implementations8 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.

Extreme dependence for multivariate data

no code implementations8 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.

Management

Dilation bootstrap

no code implementations8 Feb 2021 Alfred Galichon, Marc Henry

We propose a methodology for constructing confidence regions with partially identified models of general form.

Identification of Matching Complementarities: A Geometric Viewpoint

no code implementations7 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.

The Econometrics and Some Properties of Separable Matching Models

no code implementations4 Feb 2021 Alfred Galichon, Bernard Salanié

We present a class of one-to-one matching models with perfectly transferable utility.

Econometrics

Dual theory of choice with multivariate risks

no code implementations4 Feb 2021 Alfred Galichon, Marc Henry

We propose a multivariate extension of Yaari's dual theory of choice under risk.

Attribute

The housing problem and revealed preference theory: duality and an application

no code implementations4 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.

The VAR at Risk

no code implementations4 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.

Matching Function Equilibria with Partial Assignment: Existence, Uniqueness and Estimation

no code implementations3 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.

counterfactual Discrete Choice Models

A survey of some recent applications of optimal transport methods to econometrics

no code implementations2 Feb 2021 Alfred Galichon

This paper surveys recent applications of methods from the theory of optimal transport to econometric problems.

Econometrics

Identification of hedonic equilibrium and nonseparable simultaneous equations

no code implementations27 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.

Attribute

Vector Quantile Regression: An Optimal Transport Approach

1 code implementation18 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

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