Nonparametric instrumental variables estimation of a quantile regression model

Joel L. Horowitz () and Sokbae (Simon) Lee
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Joel L. Horowitz: Institute for Fiscal Studies and Northwestern University

No CWP09/06, CeMMAP working papers from Centre for Microdata Methods and Practice, Institute for Fiscal Studies

Abstract: We consider nonparametric estimation of a regression function that is identified by requiring a specified quantile of the regression "error" conditional on an instrumental variable to be zero. The resulting estimating equation is a nonlinear integral equation of the first kind, which generates an ill-posed-inverse problem. The integral operator and distribution of the instrumental variable are unknown and must be estimated nonparametrically. We show that the estimator is mean-square consistent, derive its rate of convergence in probability, and give conditions under which this rate is optimal in a minimax sense. The results of Monte Carlo experiments show that the estimator behaves well in finite samples.

Keywords: Statistical inverse; endogenous variable; instrumental variable; optimal rate; nonlinear integral equation; nonparametric regression (search for similar items in EconPapers)
JEL-codes: C13 C31 (search for similar items in EconPapers)
Pages: 34 pp.
Date: 2006-06-08
New Economics Papers: this item is included in nep-ecm
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Citations: View citations in EconPapers (2)

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http://cemmap.ifs.org.uk/wps/cwp0906.pdf (application/pdf)

Related works:
Journal Article: Nonparametric Instrumental Variables Estimation of a Quantile Regression Model (2007)
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Persistent link: https://EconPapers.repec.org/RePEc:ifs:cemmap:09/06

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