Autoregressive conditional root model

Anders Rahbek and Neil Shephard ()

No 2002-W7, Economics Papers from Economics Group, Nuffield College, University of Oxford

Abstract: In this paper we develop a time series model which allows long-term disequilibriums to have epochs of non-stationarity, giving the impression that long term relationships between economic variables have temporarily broken down, before they endogenously collapse back towards their long term relationship. This autoregressive root model is shown to be ergodic and covariance stationary under some rather general conditions. We study how this model can be estimated and tested, developing appropriate asymptotic theory for this task. Finally we apply the model to assess the purchasing power parity relationship.

Keywords: Cointegration; Equilibrium correction model; GARCH; Hidden Markov model; Likelihood; Regime switching; STAR model; Stochastic break; Stochastic unit root; Switching regression; Real Exchange Rate; PPP; Unit root hypothesis. (search for similar items in EconPapers)
Pages: 30 pages
Date: 2001-04-01, Revised 2002-02-01
New Economics Papers: this item is included in nep-ecm, nep-ets and nep-ifn
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (13)

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Persistent link: https://EconPapers.repec.org/RePEc:nuf:econwp:0207

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