Some Econometric Results for the Blanchard-Watson Bubble Model
The purpose of the present paper is to analyse a simple bubble model suggested by Blanchard and Watson. The model is defined by y(t) =s(t)¿y(t-1)+e(t), t=1,…,n, where s(t) is an i.i.d. binary variable with p=P(s(t)=1), independent of e(t) i.i.d. with mean zero and finite variance. We take ¿>1 so the process is explosive for a period and collapses when s(t)=0. We apply the drift criterion for non-linear time series to show that the process is geometrically ergodic when p
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- Frédérique Bec & Anders Rahbek & Neil Shephard, 2008.
"The ACR Model: A Multivariate Dynamic Mixture Autoregression,"
Oxford Bulletin of Economics and Statistics,
Department of Economics, University of Oxford, vol. 70(5), pages 583-618, October.
- Frédérique Bec & Anders Rahbek & Neil Shephard, 2008. "The ACR model: a multivariate dynamic mixture autoregression," THEMA Working Papers 2008-11, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
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