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Dynamic Identification in VARs

Patrick Fève, Paul Beaudry, Fabrice Collard, Alain Guay and Franck Portier

No 22-1384, TSE Working Papers from Toulouse School of Economics (TSE)

Abstract: Most macroeconomic models, both fully structural models as well as SVAR models, view economic outcomes as the product of a combination of endogenous and exogenous dynamic forces. In particular, the exogenous forces are generally modeled as a set of linearly independent dynamics processes. In this paper we begin by showing that this dual dynamic structure is sufficient to identify the entire set of structural impulse responses inherent to any such model. No extra restrictions are necessary. We then use this observation to suggest how it can be used to evaluate common SVAR restrictions (impact restrictions, long-run restrictions and proxy-VAR), as well as help transpire the role of cross-equation restrictions inherent to more structural models.

Keywords: Structural Shocks; Dynamic Identification; SVARs; DSGE models (search for similar items in EconPapers)
JEL-codes: C32 E32 (search for similar items in EconPapers)
Date: 2022-11-18
New Economics Papers: this item is included in nep-ecm and nep-ets
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