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A Wald test for the cointegration rank in nonstationary fractional systems

[journal article]

Avarucci, Marco
Velasco, Carlos

Abstract

This paper develops new methods for determining the cointegration rank in a nonstationary fractionally integrated system, extending univariate optimal methods for testing the degree of integration. We propose a simple Wald test based on the singular value decomposition of the unrestricted estimate o... view more

This paper develops new methods for determining the cointegration rank in a nonstationary fractionally integrated system, extending univariate optimal methods for testing the degree of integration. We propose a simple Wald test based on the singular value decomposition of the unrestricted estimate of the long run multiplier matrix. When the “strength” of the cointegrating relationship is less than 1/2, the test statistic has a standard asymptotic distribution, like Lagrange Multiplier tests exploiting local properties. We consider the behavior of our test under estimation of short run parameters and local alternatives. We compare our procedure with other cointegration tests based on different principles and find that the new method has better properties in a range of situations by using information on the alternative obtained through a preliminary estimate of the cointegration strength.... view less

Classification
Economic Statistics, Econometrics, Business Informatics

Free Keywords
C12; C32; Fractional integration; Fractional error correction model; Singular value decomposition; Cointegration test

Document language
English

Publication Year
2009

Page/Pages
p. 178-189

Journal
Journal of Econometrics, 151 (2009) 2

DOI
https://doi.org/10.1016/j.jeconom.2009.03.007

Status
Postprint; peer reviewed

Licence
PEER Licence Agreement (applicable only to documents from PEER project)


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© 2007 - 2025 Social Science Open Access Repository (SSOAR).
Based on DSpace, Copyright (c) 2002-2022, DuraSpace. All rights reserved.