Análisis de cambios de régimen en series de tiempo no lineales utilizando modelos TAR

Lecturas de Economía. Universidad de Antioquia (2004) ,Volume 61 ,Pages 103-119

Abstract

Abstract: In some situations, theoreticians recommend a given predictive model for a series of financial time. However, some inappropriate behaviors in given series make such a model unsuitable. One of the reasons for this can be the non-linearity of those behaviors. A proposed model to treat these series is the TAR model (threshold autoregressive). TAR models are determined by a variable called threshold for which it mainly results to be a temporal nonlinear model. A TAR model expresses itself as a temporal series, with a lagged as a threshold variable, where d is an entire positive called retard threshold. In practice, the threshold variable is unknown, due to which an important question is how to determine it; an answer to this question is given in this paper. TAR models are illustrated by modeling Spain\\\\\\\\\\\\\\\'s Gross Domestic Product.

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