Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/70293
Authors: 
Wagner, Martin
Year of Publication: 
1999
Series/Report no.: 
Reihe Ökonomie / Economics Series, Institut für Höhere Studien (IHS) 65
Abstract: 
The method for estimation and testing for cointegration put forward by Johansen assumes that the data are described by a vector autoregressive process. In this article we extend the data generating process to autoregressive moving average models without unit roots in the MA polynomial. We first extend some matrix algebraic relationships for I(1) processes and derive their implications for the structure theory of cointegration. Specifically we show that the cointegrating space is invariant to MA errors which have no unit roots in the MA polynomial. The above results permit to prove the robustness of the Johansen estimates of the cointegrating space in a Gaussian vector autoregressive framework when the true model is vector autoregressive moving average, without unit roots in the MA polynomial. The small sample properties of the theoretical results are examined through a small simulation study.
Subjects: 
cointegration
Johansen procedure
misspecification
robustness
simulation
Hausdorff distance
JEL: 
C13
C15
C32
Document Type: 
Working Paper

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