Search Results for author: Michal Kolesár

Found 15 papers, 10 papers with code

The Fragility of Sparsity

no code implementations4 Nov 2023 Michal Kolesár, Ulrich K. Müller, Sebastian T. Roelsgaard

We show, using three empirical applications, that linear regression estimates which rely on the assumption of sparsity are fragile in two ways.

Labour by Design: Contributions of David Card, Joshua Angrist, and Guido Imbens

no code implementations30 Mar 2022 Peter Hull, Michal Kolesár, Christopher Walters

The 2021 Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel was awarded to David Card "for his empirical contributions to labour economics" and to Joshua Angrist and Guido Imbens "for their methodological contributions to the analysis of causal relationships."

When Can We Ignore Measurement Error in the Running Variable?

no code implementations14 Nov 2021 Yingying Dong, Michal Kolesár

In many applications of regression discontinuity designs, the running variable used by the administrator to assign treatment is only observed with error.

valid

One Instrument to Rule Them All: The Bias and Coverage of Just-ID IV

no code implementations20 Oct 2021 Joshua Angrist, Michal Kolesár

We revisit the finite-sample behavior of single-variable just-identified instrumental variables (just-ID IV) estimators, arguing that in most microeconometric applications, the usual inference strategies are likely reliable.

Contamination Bias in Linear Regressions

1 code implementation9 Jun 2021 Paul Goldsmith-Pinkham, Peter Hull, Michal Kolesár

We study regressions with multiple treatments and a set of controls that is flexible enough to purge omitted variable bias.

Bias-Aware Inference in Regularized Regression Models

no code implementations29 Dec 2020 Timothy B. Armstrong, Michal Kolesár, Soonwoo Kwon

We consider inference on a scalar regression coefficient under a constraint on the magnitude of the control coefficients.

regression

Robust Empirical Bayes Confidence Intervals

2 code implementations7 Apr 2020 Timothy B. Armstrong, Michal Kolesár, Mikkel Plagborg-Møller

We construct robust empirical Bayes confidence intervals (EBCIs) in a normal means problem.

Sensitivity Analysis using Approximate Moment Condition Models

1 code implementation22 Aug 2018 Timothy B. Armstrong, Michal Kolesár

We show that near-optimal confidence intervals (CIs) can be formed by taking a generalized method of moments (GMM) estimator, and adding and subtracting the standard error times a critical value that takes into account the potential bias from misspecification of the moment conditions.

Econometrics Methodology

Shift-Share Designs: Theory and Inference

1 code implementation20 Jun 2018 Rodrigo Adão, Michal Kolesár, Eduardo Morales

We study inference in shift-share regression designs, such as when a regional outcome is regressed on a weighted average of sectoral shocks, using regional sector shares as weights.

regression valid

Finite-Sample Optimal Estimation and Inference on Average Treatment Effects Under Unconfoundedness

1 code implementation13 Dec 2017 Timothy B. Armstrong, Michal Kolesár

We consider estimation and inference on average treatment effects under unconfoundedness conditional on the realizations of the treatment variable and covariates.

Applications Econometrics Methodology

Inference in Regression Discontinuity Designs with a Discrete Running Variable

1 code implementation13 Jun 2016 Michal Kolesár, Christoph Rothe

We consider inference in regression discontinuity designs when the running variable only takes a moderate number of distinct values.

Applications Methodology

Simple and Honest Confidence Intervals in Nonparametric Regression

1 code implementation3 Jun 2016 Timothy B. Armstrong, Michal Kolesár

We show that using the bandwidth that minimizes the maximum mean-squared error results in CIs that are nearly efficient and that in this case, the critical value depends only on the rate of convergence.

Applications Statistics Theory Statistics Theory

Optimal inference in a class of regression models

1 code implementation19 Nov 2015 Timothy B. Armstrong, Michal Kolesár

When the function class is centrosymmetric, these efficiency bounds imply that minimax CIs are close to efficient at smooth regression functions.

Statistics Theory Applications Statistics Theory

Minimum Distance Approach to Inference with Many Instruments

1 code implementation11 Apr 2015 Michal Kolesár

With respect to a particular weight matrix, the minimum distance estimator is equivalent to the random effects estimator of Chamberlain and Imbens (2004), and the estimator of the coefficient on the endogenous regressor coincides with the limited information maximum likelihood estimator.

Applications

A Simple Adjustment for Bandwidth Snooping

1 code implementation30 Nov 2014 Timothy B. Armstrong, Michal Kolesár

This paper proposes a simple adjustment that gives correct coverage in such situations: replace the normal quantile with a critical value that depends only on the kernel and ratio of the maximum and minimum bandwidths the researcher has entertained.

Applications

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