TESTING FOR SMOOTH TRANSITION NONLINEARITY IN PARTIALLY NONSTATIONARY VECTOR AUTOREGRESSIONS

  • Published : 2007.06.30

Abstract

This paper considers the tests for the presence of smooth transition non-linearity in the partially nonstationary vector autoregressive model. The transition parameters cannot be identified under the null hypothesis of linearity, and therefore this paper develops the tests for smooth transition nonlinearity, the associated asymptotic theory and the bootstrap inference. The Monte Carlo simulation evidence shows that the bootstrap inference generates moderate size and power performances.

Keywords

References

  1. ANDREWS, D. W. K. (1993). 'Tests for parameter instability and structural change with unknown change point', Econometrica, 61, 821-856 https://doi.org/10.2307/2951764
  2. CANER, M. AND HANSEN, B. E. (2001). 'Threshold autoregression with a unit root', Econometrica, 69, 1555-1596 https://doi.org/10.1111/1468-0262.00257
  3. CHAN, K. S. AND TONG, H. (1986). 'On estimating thresholds in autoregressive models', Journal of Time Series Analysis, 7, 179-190 https://doi.org/10.1111/j.1467-9892.1986.tb00501.x
  4. DAVIES, R. B. (1987). 'Hypothesis testing when a nuisance parameter is present only under the alternative', Biometrika, 74, 33-43
  5. ENGLE, R. F. AND GRANGER, C. W. J. (1987). 'Co-integration and error correction: representation, estimation, and testing', Econometrica, 55, 251-276 https://doi.org/10.2307/1913236
  6. HAGGAN, V. AND OZAKI, T. (1981). 'Modelling nonlinear random vibrations using an amplitude-dependent autoregressive time series model', Biometrika, 68, 189-196 https://doi.org/10.1093/biomet/68.1.189
  7. HANSEN, B. E. (1996). 'Inference when a nuisance parameter is not identified under the null hypothesis', Econometrica, 64, 413-430 https://doi.org/10.2307/2171789
  8. HANSEN, B. E. AND SEO, B. (2002). 'Testing for two-regime threshold cointegration in vector error-correction models', Journal of Econometrics, 110, 293-318 https://doi.org/10.1016/S0304-4076(02)00097-0
  9. MICHAEL, P., NOBAY, A. R. AND PEEL, D. A. (1997). 'Transactions costs and nonlinear adjustment in real exchange rates: an empirical investigation', Journal of Political Economy, 105, 862-879 https://doi.org/10.1086/262096
  10. NEFTCI, S. N. (1984). 'Are economic time series asymmetric over the business cycle?', Journal of Political Economy, 92, 307-328 https://doi.org/10.1086/261226
  11. SEO, B. (1998). 'Tests for structural change in cointegrated systems', Econometric Theory, 14, 222-259
  12. TERASVIRTA, T. (1994). 'Specification, estimation, and evaluation of smooth transition autoregressive models', Journal of the American Statistical Association, 89, 208-218 https://doi.org/10.2307/2291217
  13. TERASVIRTA, T. AND ANDERSON, H. M. (1992). 'Characterizing nonlinearities in business cycles using smooth transition autoregressive models', Journal of Applied Econometrics, 7, S119-S136 https://doi.org/10.1002/jae.3950070509