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Autor:innen: 
Erscheinungsjahr: 
2012
Schriftenreihe/Nr.: 
DIW Discussion Papers No. 1259
Verlag: 
Deutsches Institut für Wirtschaftsforschung (DIW), Berlin
Zusammenfassung: 
Identification of shocks of interest is a central problem in structural vector autoregressive (SVAR) modelling. Identification is often achieved by imposing restrictions on the impact or long-run effects of shocks or by considering sign restrictions for the impulse responses. In a number of articles changes in the volatility of the shocks have also been used for identification. The present study focusses on the latter device. Some possible setups for identification via heteroskedasticity are reviewed and their potential and limitations are discussed. Two detailed examples are considered to illustrate the approach.
Schlagwörter: 
Markov switching model
vector autoregression
heteroskedasticity
vector GARCH
conditional heteroskedasticity
JEL: 
C32
Dokumentart: 
Working Paper

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