Arbitrary initial values and random norm for explosive AR(1) processes generated by stationary errors

S.Y. Hwang

Statistics & Probability Letters, 2013, vol. 83, issue 1, 127-134

Abstract: This article is concerned with a broad class of explosive AR(1) models. Allowing stationary dependence on the error process, we do not restrict ourselves to independent and identically distributed errors. The model accommodates, as special cases, GARCH errors, AR(1) errors and Gaussian ARMA errors. The error distribution is permitted to be non-normal. To circumvent the effect of initial values, the limit distribution of the least squares estimate using a random norm (rather than a constant norm) is derived. It is shown that the limit distribution using a random norm is free from the initial value provided the error is symmetrically distributed about zero.

Keywords: Explosive AR(1); Initial value; Random norm; Dependent errors (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (1)

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DOI: 10.1016/j.spl.2012.08.022

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