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A unifying theory of tests of rank

Majid Al-Sadoon

Journal of Econometrics, 2017, vol. 199, issue 1, 49-62

Abstract: The general principles underlying tests of matrix rank are investigated. It is demonstrated that statistics for such tests can be seen as implicit functions of null space estimators. In turn, the asymptotic behaviour of the null space estimators is shown to determine the asymptotic behaviour of the statistics through a plug-in principle. The theory simplifies the asymptotics under a variety of alternatives of empirical relevance as well as misspecification, clarifies the relationships between the various existing tests, makes use of important results in the numerical analysis literature, and motivates numerous new tests. A brief Monte Carlo study illustrates the results.

Keywords: Tests of rank; Cointegration; Plug-in principle; Null space estimation; Reduced-rank approximation; Local power; Misspecification (search for similar items in EconPapers)
JEL-codes: C12 C13 C30 (search for similar items in EconPapers)
Date: 2017
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Journal of Econometrics is currently edited by T. Amemiya, A. R. Gallant, J. F. Geweke, C. Hsiao and P. M. Robinson

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