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Optimal Sup-norm Rates and Uniform Inference on Nonlinear Functionals of Nonparametric IV Regression

Xiaohong Chen, Timothy M. Christensen

arXiv 13 Aug 2015 · Statistics — Methodology · publishedQuantitative Economics (2018) · 75 citations (OpenAlex)

arXiv:1508.03365 · PDF · DOI · OpenAlex · Extracted main text

Abstract

This paper makes several important contributions to the literature about nonparametric instrumental variables (NPIV) estimation and inference on a structural function $h_0$ and its functionals. First, we derive sup-norm convergence rates for computationally simple sieve NPIV (series 2SLS) estimators of $h_0$ and its derivatives. Second, we derive a lower bound that describes the best possible (minimax) sup-norm rates of estimating $h_0$ and its derivatives, and show that the sieve NPIV estimator can attain the minimax rates when $h_0$ is approximated via a spline or wavelet sieve. Our optimal sup-norm rates surprisingly coincide with the optimal root-mean-squared rates for severely ill-posed problems, and are only a logarithmic factor slower than the optimal root-mean-squared rates for mildly ill-posed problems. Third, we use our sup-norm rates to establish the uniform Gaussian process strong approximations and the score bootstrap uniform confidence bands (UCBs) for collections of nonlinear functionals of $h_0$ under primitive conditions, allowing for mildly and severely ill-posed problems. Fourth, as applications, we obtain the first asymptotic pointwise and uniform inference results for plug-in sieve t-statistics of exact consumer surplus (CS) and deadweight loss (DL) welfare functionals under low-level conditions when demand is estimated via sieve NPIV. Empiricists could read our real data application of UCBs for exact CS and DL functionals of gasoline demand that reveals interesting patterns and is applicable to other markets.

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57
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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
1Blundell, R., X. Chen, and D. Kristensen (2007) Semi-nonparametric iv estimation of shape-invariant engel curves1.000154100%
2Horowitz, J. L (2011) Applied nonparametric instrumental variables estimation1.00075100%
3Chen, X. and T. M. Christensen (2015) Optimal sup-norm rates, adaptivity and inference in nonparametric instrumental variables estimation self1.00064100%
4Belloni, A., V. Chernozhukov, D. Chetverikov, and K. Kato (2015) Some new asymptotic theory for least squares series: Pointwise and uniform results1.00063100%
5Newey, W. K. and J. L. Powell (2003) Instrumental variable estimation of nonparametric models1.00063100%
6Chen, X. and D. Pouzo (2012) Estimation of nonparametric conditional moment models with possibly nonsmooth generalized residuals self1.00053100%
7Newey, W. K (1997) Convergence rates and asymptotic normality for series estimators0.9416583%
8Blundell, R., J. L. Horowitz, and M. Parey (2012) Measuring the price responsiveness of gasoline demand: Economic shape restrictions and nonparametric demand estimation0.92843100%
9Chernozhukov, V., S. Lee, and A. M. Rosen (2013) Intersection bounds: Estimation and inference0.92843100%
10Chen, X. and M. Reiss (2011) On rate optimality for ill-posed inverse problems in econometrics self0.8749567%

Showing the top 10 of 70 scored citations.

Cited by, within the corpus

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Citing paperIntensityMentionsSections
1Adaptive, Rate-Optimal Hypothesis Testing in Nonparametric IV Models1.00093
2Estimation and Inference for Causal Functions with Multiway Clustered Data1.00083
3Inference for Nonlinear Endogenous Treatment Effects Accounting for High-Dimensional Covariate Complexity1.00053
4Kernel Instrumental Variable Regression0.928104
5Nonparametric Instrumental Variables Estimation Under Misspecification0.84343
6Inference on Strongly Identified Functionals of Weakly Identified Functions0.84333
7Adaptive Estimation and Uniform Confidence Bands for Nonparametric Structural Functions and Elasticities0.794165
8A Projection Framework for Testing Shape Restrictions That Form Convex Cones0.681194
9Dual Instrumental Variable Regression0.64422
10Penalized GMM Framework for Inference on Functionals of Nonparametric Instrumental Variable Estimators0.64422