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Asymptotic properties of Bayesian inference in linear regression with a structural break

Kenichi Shimizu

arXiv 18 Jan 2022 · Econometrics · publishedJournal of Econometrics (2022) · 4 citations (OpenAlex)

arXiv:2201.07319 · PDF · DOI · OpenAlex · Extracted main text

Abstract

This paper studies large sample properties of a Bayesian approach to inference about slope parameters $\gamma$ in linear regression models with a structural break. In contrast to the conventional approach to inference about $\gamma$ that does not take into account the uncertainty of the unknown break location $\tau$, the Bayesian approach that we consider incorporates such uncertainty. Our main theoretical contribution is a Bernstein-von Mises type theorem (Bayesian asymptotic normality) for $\gamma$ under a wide class of priors, which essentially indicates an asymptotic equivalence between the conventional frequentist and Bayesian inference. Consequently, a frequentist researcher could look at credible intervals of $\gamma$ to check robustness with respect to the uncertainty of $\tau$. Simulation studies show that the conventional confidence intervals of $\gamma$ tend to undercover in finite samples whereas the credible intervals offer more reasonable coverages in general. As the sample size increases, the two methods coincide, as predicted from our theoretical conclusion. Using data from Paye and Timmermann (2006) on stock return prediction, we illustrate that the traditional confidence intervals on $\gamma$ might underrepresent the true sampling uncertainty.

Citation extraction

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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
1bai1997 APACrefauthors Bai, J. APACrefauthors \ (1997) 19970.95014686%
2baek2021 APACrefauthors Baek, Y. APACrefauthors \ (2021) 20210.92844100%
3casini_perron2021continuous APACrefauthors Casini, A. \ Perron, P. A… (2021) 20210.92843100%
4eo_morley2015 APACrefauthors Eo, Y. \ Morley, J. APACrefauthors \ (2015) 20150.87462100%
5paye_timmermann2006 APACrefauthors Paye, B S. \ Timmermann, A. APACr… (2006) 20060.81142100%
6hong_preston2012 APACrefauthors Hong, H. \ Preston, B. APACrefauthor… (2012) 20120.6444250%
7perron2006 APACrefauthors Perron, P. APACrefauthors \ (2006) 20060.64422100%
8qu_perron2007 APACrefauthors Qu, Z. \ Perron, P. APACrefauthors \ (2007) 20070.64422100%
9bai_perron1998 APACrefauthors Bai, J. \ Perron, P. APACrefauthors \ (1998) 19980.40511100%
10bai_perron2003 APACrefauthors Bai, J. \ Perron, P. APACrefauthors \ (2003) 20030.40511100%

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Cited by, within the corpus

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

Citing paperIntensityMentionsSections
1Break-Point Date Estimation for Nonstationary Autoregressive and Predictive Regression Models0.40511