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Bayesian Comparison of ARIMA and Stationary ARMA Models

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  • John Marriott
  • Paul Newbold

Abstract

Time series analysts have long been concerned with distinguishing stationary “generating processes” from processes for which differencing is required to induce stationarity. In practical applications, this issue is addressed almost invariably through formal hypothesis testing. In this paper, we explore some aspects of the Bayesian approach to the problem, leading to the calculation of posterior odds ratios. Interesting features arise in the simplest possible variant of the problem, where a choice has to be made between a random walk and a stationary first order autoregressive model. We discuss in detail the analysis of this case, and also indicate how our approach extends to the more general comparison of an ARIMA model with a stationary competitor. Les chercheurs intéresseés par l'analyse des données chronologiques sont préoccupés de discemer les procesus générant des séies stationnaries des processus générant des séries stationnaies dans la différence. Typiquement, cette question est adressée au moyen d'un test d'hypothése. Les auteurs appliquent ici la méthode bayesienne pour faire un choix. Meme dans le cas simple où le choix est entre un modèle de chocs aleatoires et un modèle stationnaire autoregreif de premier ordre, l'approche présente des propriétés notables. l'application de la méthode proposée pour comparer un modèle ARIMA à un modéle stationnaire alternatif.

Suggested Citation

  • John Marriott & Paul Newbold, 1998. "Bayesian Comparison of ARIMA and Stationary ARMA Models," International Statistical Review, International Statistical Institute, vol. 66(3), pages 323-336, December.
  • Handle: RePEc:bla:istatr:v:66:y:1998:i:3:p:323-336
    DOI: 10.1111/j.1751-5823.1998.tb00376.x
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    Cited by:

    1. Lima, L.M. Marangon & Popova, E. & Damien, P., 2014. "Modeling and forecasting of Brazilian reservoir inflows via dynamic linear models," International Journal of Forecasting, Elsevier, vol. 30(3), pages 464-476.
    2. Brian Hanlon & Catherine Forbes, 2002. "Model Selection Criteria for Segmented Time Series from a Bayesian Approach to Information Compression," Monash Econometrics and Business Statistics Working Papers 8/02, Monash University, Department of Econometrics and Business Statistics.
    3. Marriott, John & Newbold, Paul, 2000. "The strength of evidence for unit autoregressive roots and structural breaks: A Bayesian perspective," Journal of Econometrics, Elsevier, vol. 98(1), pages 1-25, September.
    4. Robert M. Kunst & Michael Reutter, 2000. "Decisions on Seasonal Unit Roots," CESifo Working Paper Series 286, CESifo.

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