English, Article edition: Detecting level shifts in ARMA-GARCH (1,1) Models F. Javier Trivez; Beatriz Catalan

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Physical Description
  • article
Language
  • English

Edition details

Title
  • Detecting level shifts in ARMA-GARCH (1,1) Models
Author
  • F. Javier Trivez
  • Beatriz Catalan
Physical Description
  • article
Notes
  • The purpose of this article is to present a new method to detect level shifts in the context of conditional heteroscedastic models. First, we define precisely what type of outlier we are referring to, a concept that has been scarcely touched in the field of GARCH (1,1) models, and then we go on to present our methodology based on the nature of the Lagrange multiplier tests. The validity and efficiency of the proposed procedure are demonstrated through different simulation experiments. To conclude, we present a practical application of the method to the time series of returns of US short-term interest rates.
  • level outliers, volatility outliers, level shifts, GARCH models, LM tests,
  • RePEc:taf:japsta:v:36:y:2009:i:6:p:679-697
Language
  • English
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