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ON ESTIMATING AN ARMA MODEL WITH AN MA UNIT ROOT
Published online by Cambridge University Press: 01 June 1998
Abstract
This paper investigates the behavior of the maximum likelihood estimator of a Gaussian autoregressive moving average model with a unit root in the moving average polynomial. The results are primarily of interest in testing hypotheses that involve moving average unit roots as, for example, when testing for stationarity of a series.
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- Research Article
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- © 1998 Cambridge University Press
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