Scientific journal paper Q2
Testing for parameter constancy using Chebyshev time polynomials
Luís Martins (Martins, L. F.);
Journal Title
The Manchester School
Year (definitive publication)
2013
Language
English
Country
United Kingdom
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Abstract
We propose a simple method of testing for parameter constancy in regression models with stationary data that allow for coefficients that vary smoothly over time. The method is shown to have good statistical properties. A sieve bootstrapping procedure is suggested to improve the finite sample size of the test for a large number of time polynomials in autoregressive models. We revisited Hansen's study (Journal of Economic Perspectives, Vol. 15 (2001), pp. 117-128) of structural breaks in a first-order autoregressive model of labor productivity in the US manufacturing/durables sector and found evidence of time-varying autoregressive parameter.
Acknowledgements
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Keywords
  • Economics and Business - Social Sciences