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An application of the TRAMO-SEATS automatic procedure; direct versus indirect adjustment

  • Maravall, Agustin

The ARIMA model based methodology of programs TRAMO and SEATS for seasonal adjustment and trend cycle estimation was applied to the exports, imports, and balance of trade Japanese series in Maravall (2002). The programs were used in an automatic mode, and the results analyzed. The present paper contains an extension of the work. First, some improvements in the automatic modelling procedure are illustrated, and the models for the seasonally adjusted series and its trend cycle component are discussed (in particular, their order of integration). It is further shown how the SEATS output can be of help in model selection. Finally, the important problem of the choice between direct and indirect adjustment of an aggregate is addressed. It is concluded that, because aggregation has a strong effect on the spectral shape of the series, and because seasonal adjustment is a non linear transformation of the original series, direct adjustment is preferable, even at the cost of destroying identities between the original series.

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Article provided by Elsevier in its journal Computational Statistics & Data Analysis.

Volume (Year): 50 (2006)
Issue (Month): 9 (May)
Pages: 2167-2190

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Handle: RePEc:eee:csdana:v:50:y:2006:i:9:p:2167-2190
Contact details of provider: Web page: http://www.elsevier.com/locate/csda

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  1. Canova, Fabio & Ciccarelli, Matteo & Ortega, Eva, 2004. "Similarities and convergence in G-7 cycles," Working Paper Series 0312, European Central Bank.
  2. Agustín Maravall, 1996. "Unobserved Components in Economic Time Series," Banco de Espa�a Working Papers 9609, Banco de Espa�a.
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  9. Hillmer, Steven C, 1985. "Measures of Variability for Model-based Seasonal Adjustment Procedures," Journal of Business & Economic Statistics, American Statistical Association, vol. 3(1), pages 60-68, January.
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  11. Camacho Maximo & Perez Quiros Gabriel, 2007. "Jump-and-Rest Effect of U.S. Business Cycles," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 11(4), pages 1-39, December.
  12. David A. Pierce, 1978. "Seasonal adjustment when both deterministic and stochastic seasonality are present," Special Studies Papers 107, Board of Governors of the Federal Reserve System (U.S.).
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  15. Bell, William R & Hillmer, Steven C, 1984. "Issues Involved with the Seasonal Adjustment of Economic Time Series," Journal of Business & Economic Statistics, American Statistical Association, vol. 2(4), pages 291-320, October.
  16. Maravall, Agustin, 1987. "Minimum Mean Squared Error Estimation of the Noise in Unobserved Component Models," Journal of Business & Economic Statistics, American Statistical Association, vol. 5(1), pages 115-20, January.
  17. D. S. G. Pollock, 2002. "A review of TSW: the Windows version of the TRAMO-SEATS program," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 17(3), pages 291-299.
  18. Javier Andres & J. David López-Salido & Edward Nelson, 2004. "Tobin's imperfect asset substitution in optimizing general equilibrium," Working Papers 2004-003, Federal Reserve Bank of St. Louis.
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