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Identification of structural shocks in Bayesian VEC models with two-state Markov-switching heteroskedasticity

Justyna Wróblewska, Łukasz Kwiatkowski

arXiv 5 Jun 2024 · Econometrics

arXiv:2406.03053 · PDF · DOI · OpenAlex · Extracted main text

Abstract

We develop a Bayesian framework for cointegrated structural VAR models identified by two-state Markovian breaks in conditional covariances. The resulting structural VEC specification with Markov-switching heteroskedasticity (SVEC-MSH) is formulated in the so-called B-parameterization, in which the prior distribution is specified directly for the matrix of the instantaneous reactions of the endogenous variables to structural innovations. We discuss some caveats pertaining to the identification conditions presented earlier in the literature on stationary structural VAR-MSH models, and revise the restrictions to actually ensure the unique global identification through the two-state heteroskedasticity. To enable the posterior inference in the proposed model, we design an MCMC procedure, combining the Gibbs sampler and the Metropolis-Hastings algorithm. The methodology is illustrated both with a simulated as well as real-world data examples.

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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
1Lütkepohl, H., Velinov, A (2016) Structural vector autoregressions: Checking identifying long-run restrictions via heteroskedasticity1.000144100%
2Lütkepohl, H., Woźniak, T (2020) Bayesian inference for structural vector autoregressions identified by Markov-switching heteroskedasticity0.98320695%
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6Louis, R.J., Eldomiaty, T (2010) How do stock prices respond to fundamental shocks in the case of the United States? Evidence from NASDAQ and DJIA0.87452100%
7Lütkepohl, H (2005) New introduction to multiple time series analysis0.87452100%
8Jochmann, M., Koop, G (2015) Regime-switching cointegration0.81142100%
9Herwartz, H., Lütkepohl, H (2014) Structural vector autoregressions with Markov switching: Combining conventional with statistical identification of shocks0.73732100%
10Kilian, L., Lütkepohl, H (2017) Structural vector autoregressive analysis0.73732100%

Showing the top 10 of 52 scored citations.