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THE EXACT DISCRETE MODEL OF A THIRD-ORDER SYSTEM OF LINEAR STOCHASTIC DIFFERENTIAL EQUATIONS WITH OBSERVABLE STOCHASTIC TRENDS

Published online by Cambridge University Press:  14 October 2009

Theodore Simos*
Affiliation:
University of Ioannina
*
Address correspondence to: Theodore Simos, Department of Economics, University Campus, University of Ioannina, 45110 Ioannina, Greece; e-mail: [email protected].

Abstract

The objective of this paper is to develop closed-form formulae for the exact discretization of a third-order system of stochastic differential equations, with fixed initial conditions, driven by observable stochastic trends and white noise innovations. The model provides a realistic alternative to first- and second-order differential equation specifications of the time lag distribution, forming the basis of a testing and estimation procedure. The exact discrete models, derived under two sampling schemes with either stock or flow variables, are put into a system error correction form that preserves the information of the underlying continuous time model regarding the order of integration and the dimension of cointegration space.

Type
Articles
Copyright
Copyright © Cambridge University Press 2009

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