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The Bierens test for certain nonstationary models. (English) Zbl 1431.62391

Summary: We adapt the H. J. Bierens [Econometrica 58, No. 6, 1443–1458 (1990; Zbl 0737.62058)] test to the \(I\)-regular models of J. Y. Park and P. C. B. Phillips [Econometrica 69, No. 1, 117–161 (2001; Zbl 0999.62050)]. H. J. Bierens [loc. cit.] defines the test hypothesis in terms of a conditional moment condition. Under the null hypothesis, the moment condition holds with probability one. The probability measure used is that induced by the variables in the model, that are assumed to be strictly stationary. Our framework is nonstationary and this approach is not always applicable. We show that the Lebesgue measure can be used instead in a meaningful way. The resultant test is consistent against all \(I\)-regular alternatives.

MSC:

62M10 Time series, auto-correlation, regression, etc. in statistics (GARCH)
62F03 Parametric hypothesis testing
62F05 Asymptotic properties of parametric tests
62P20 Applications of statistics to economics

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