Fraser, Iain and Balcombe, Kelvin and Sharma, Abhijit (2007): Bayesian Model Averaging and Identification of Structural Breaks in Time Series.
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Bayesian model averaging is used for testing for multiple break points in uni- variate series using conjugate normal-gamma priors. This approach can test for the number of structural breaks and produce posterior probabilities for a break at each point in time. Results are averaged over speciÖcations including: station- ary; stationary around trend; and, unit root models, each containing di§ erent types and numbers of breaks and di§ erent lag lengths. The procedures are used to test for structural breaks on 14 annual macroeconomic series and 11 natural resource price series. The results indicate that there are structural breaks in al l of the natural resource series and most of the macroeconomic series. Many of the series had multiple breaks. Our Öndings regarding the existence of unit roots, having al lowed for structural breaks in the data, are largely consistent with previous work.
|Item Type:||MPRA Paper|
|Original Title:||Bayesian Model Averaging and Identification of Structural Breaks in Time Series|
|Keywords:||Bayesian Model Averaging, Structural Breaks, Unit Root, Macro- economic Data, Natural Resource data|
|Subjects:||C - Mathematical and Quantitative Methods > C0 - General > C01 - Econometrics
C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General > C11 - Bayesian Analysis: General
|Depositing User:||Abhijit Sharma|
|Date Deposited:||08. May 2008 17:03|
|Last Modified:||13. Feb 2013 12:45|
Abgeyegbe, T.D. (1993) The stochastic behavior of mineral-commodity prices, in: P.C.B. Phillips (Ed.), Models, Methods, and Applicationsin Econometrics: Essays in Honor of A. R. Bergstrom, Blackwell Science, Oxford.
Ahrens, W.A. and V.R. Sharma (1997) Trends in natural resource commod- ity prices: deterministic or stochastic?, Journal of Environmental Economics and Management, 33: 59ñ74.
Bauwens, L. Lubrano M and Richard J.F. (1999) Bayesian Inference in Dy- namic Econometric Models. Advanced Texts in Econometrics. Oxford Univer- sity Press, Oxford.
Bai, J. (1999) Likelihood ratio tests for multiple structural changes Journal of Econometrics, 91: 299- 323.
Bai, J. and P. Perron (1998) Estimating Linear Models with Mulliple Struc- tural Changes, Econometrica, 66(1): 47-78