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Locally optimal tests against periodic autoregression: parametric and nonparametric approaches

par Bentarzi, Mohamed;Hallin, Marc
Référence Econometric Theory, 12, 1, page (88-112)
Publication Publié, 1996

Article révisé par les pairs

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Résumé :

Locally asymptotically optimal tests are derived for the null hypothesis of traditional AR dependence, with unspecified AR coefficients and unspecified innovation densities, against an alternative of periodically correlated AR dependence. Parametric and nonparametric rank-based versions are proposed. Local powers and asymptotic relative efficiencies (with respect, e.g., to the corresponding Gaussian Lagrange multiplier tests proposed in Ghysels and Hall [1992, "Lagrange Multiplier Tests for Periodic Structures," unpublished manuscript, CRDE, Montreal] and Lutkepohl [1991, Introduction to Multiple Time Series Analysis, Berlin: Springer-Verlag; 1991, pp. 243-264, in W.E. Griffiths, H. Lütkepohl, & M.E. Block (eds.), Readings in Econometric Theory and Practice, Amsterdam: North-Holland] are computed explicitly; a rank-based test of the van der Waerden type is proposed, for which this ARE is uniformly larger than 1. The main technical tool is Le Cam's local asymptotic normality property. © 1996 Cambridge University Press.