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Testing for Structural Breaks and other forms of Non-stationarity: a Misspecification Perspective

Maria Heracleous, Andreas Koutris and Aris Spanos ()
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Maria Heracleous: American University
Andreas Koutris: Virginia Tech

No 493, Computing in Economics and Finance 2006 from Society for Computational Economics

Abstract: In the 1980s and 1990s the issue of non-stationarity in economic time series has been in the context of unit roots vs. mean trends in AR(p) models. More recently this perspective has been extended to include structural breaks. In this paper we take a much broader perspective by viewing the problem as one of misspecification testing: assessing the stationarity of the underlying process. The proposed misspecification testing procedure relies on resampling techniques to enhance the informational content of the observed data in an attempt to capture heterogeneity `locally' using rolling window estimators of the primary moments of the stochastic process. The effectiveness of the testing procedure is assessed using extensive Monte Carlo simulations

Keywords: Maximum Entropy Bootstrap; Non-Stationarity (search for similar items in EconPapers)
Date: 2006-07-04
New Economics Papers: this item is included in nep-ecm and nep-ets
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