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Which is the best model for the US inflation rate: a structural changes model or a long memory process

Author

Listed:
  • Dominique Guegan

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique)

  • Lanouar Charfeddine

    (OEP - UPEM - Université Paris-Est Marne-la-Vallée)

Abstract

This paper analyzes the dynamics of the US inflation series using two classes of models : structural changes models and Long memory processes. For the first class, we use the Markov Switching (MS-AR) model of Hamilton (1989) and the Structural Change (SCH-AR) model using the sequential method proposed by Bai and Perron (1998, 2003). For the second class, we use the ARFIMA process developed by Granger and Joyeux (1980). Moreover, we investigate whether the observed long memory behavior is a true behavior or a spurious behavior created by the presence of breaks in time series. Our empirical results provide evidence for changes in mean, breaks dates coincide exactly with some economic and financial events such Vietnam War and the two oil price shocks. Moreover, we show that the observed long memory behavior is spurious and is due to the presence of breaks in data set.

Suggested Citation

  • Dominique Guegan & Lanouar Charfeddine, 2015. "Which is the best model for the US inflation rate: a structural changes model or a long memory process," Post-Print halshs-00645841, HAL.
    • Handle: RePEc:hal:journl:halshs-00645841
    as

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