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Smoothed GMM for quantile models

Luciano de Castro, Antonio F. Galvao, David M. Kaplan, Xin Liu

arXiv 11 Jul 2017 · Mathematics — Statistics Theory · publishedJournal of Econometrics (2019) · 42 citations (OpenAlex)

arXiv:1707.03436 · PDF · DOI · OpenAlex · Extracted main text

Abstract

This paper develops theory for feasible estimators of finite-dimensional parameters identified by general conditional quantile restrictions, under much weaker assumptions than previously seen in the literature. This includes instrumental variables nonlinear quantile regression as a special case. More specifically, we consider a set of unconditional moments implied by the conditional quantile restrictions, providing conditions for local identification. Since estimators based on the sample moments are generally impossible to compute numerically in practice, we study feasible estimators based on smoothed sample moments. We propose a method of moments estimator for exactly identified models, as well as a generalized method of moments estimator for over-identified models. We establish consistency and asymptotic normality of both estimators under general conditions that allow for weakly dependent data and nonlinear structural models. Simulations illustrate the finite-sample properties of the methods. Our in-depth empirical application concerns the consumption Euler equation derived from quantile utility maximization. Advantages of the quantile Euler equation include robustness to fat tails, decoupling of risk attitude from the elasticity of intertemporal substitution, and log-linearization without any approximation error. For the four countries we examine, the quantile estimates of discount factor and elasticity of intertemporal substitution are economically reasonable for a range of quantiles above the median, even when two-stage least squares estimates are not reasonable.

Citation extraction

70
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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Chernozhukov, V. and C. Hansen (2006) Instrumental Quantile Regression Inference for Structural and Treatment Effect Models1.00073100%
2Chernozhukov, V. and C. Hansen (2005) An IV Model of Quantile Treatment Effects1.00063100%
3Andrews, D. W. K (1991) Heteroskedasticity and Autocorrelation Consistent Covariance Matrix Estimation0.92843100%
4Kaplan, D. M. and Y. Sun (2017) Smoothed Estimating Equations for Instrumental Variables Quantile Regression self0.88820870%
5Yogo, M (2004) Estimating the Elasticity of Intertemporal Substitution When Instruments are Weak0.87472100%
6de Castro, L. and A. F. Galvao (2017) Dynamic Quantile Models of Rational Behavior self0.87472100%
7Hall, R. E (1988) Intertemporal Substitution in Consumption0.87452100%
8Newey, W. K. and D. McFadden (1994) Large Sample Estimation and Hypothesis Testing0.83612558%
9Chernozhukov, V. and H. Hong (2003) An MCMC Approach to Classical Estimation0.81142100%
10Chen, X., V. Chernozhukov, S. Lee, and W. K. Newey (2014) Local Identification of Nonparametric and Semiparametric Models0.7373367%

Showing the top 10 of 132 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
1Averaging estimation for instrumental variables quantile regression0.965104
2Multivariate quantile regression0.64432
3A Unified Framework for Specification Tests of Continuous Treatment Effect Models0.64422
4Learning non-smooth models: instrumental variable quantile regressions and related problems0.40511
5Decentralization Estimators for Instrumental Variable Quantile Regression Models0.40511
6Identification of multi-valued treatment effects with unobserved heterogeneity0.40511
7A first-stage representation for instrumental variables quantile regression0.40511
8Quantile Regression under Limited Dependent Variable0.40511
9Smoothed instrumental variables quantile regression0.40511
10IV regression with distribution-valued outcomes0.40511