Robust Bayesian inference in proxy SVARs

Raffaella Giacomini (), Toru Kitagawa () and Matthew Read
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Toru Kitagawa: Institute for Fiscal Studies and University College London

No CWP13/20, CeMMAP working papers from Centre for Microdata Methods and Practice, Institute for Fiscal Studies

Abstract: We develop methods for robust Bayesian inference in structural vector autoregressions (SVARs) where the parameters of interest are set-identi?ed using external instruments, or ‘proxy SVARs’. Set-identi?cation in these models typically occurs when there are multiple instruments for multiple structural shocks. Existing Bayesian approaches to inference in proxy SVARs require researchers to specify a single prior over the model’s parameters, but, under set-identi?cation, a component of the prior is never revised. We extend the robust Bayesian approach to inference in set-identi?ed models proposed by Giacomini and Kitagawa (2018) – which allows researchers to relax potentially con-troversial point-identifying restrictions without having to specify an unrevisable prior – to proxy SVARs. We provide new results on the frequentist validity of the approach in proxy SVARs. We also explore the e?ect of instrument strength on inference about the identi?ed set. We illustrate our approach by revisiting Mertens and Ravn (2013) and relaxing the assumption that they impose to obtain point identi?cation.

Date: 2020-04-15
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Citations: View citations in EconPapers (2)

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Related works:
Journal Article: Robust Bayesian inference in proxy SVARs (2022)
Working Paper: Robust Bayesian Inference in Proxy SVARs (2020)
Working Paper: Robust Bayesian Inference in Proxy SVARs (2019)
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