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A Double-Threshold GARCH Model for the French Franc/Deutschmark Exchange Rate

Chris Brooks

Journal of Forecasting, 2001, vol. 20, issue 2, 135-43

Abstract: This paper combines and generalizes a number of recent time series models of daily exchange rate series by using a SETAR model which also allows the variance equation of a GARCH specification for the error terms to be drawn from more than one regime. An application of the model to the French Franc/Deutschmark exchange rate demonstrates that out-of-sample forecasts for the exchange rate volatility are also improved when the restriction that the data it is drawn from a single regime is removed. This result highlights the importance of considering both types of regime shift (i.e. thresholds in variance as well as in mean) when analysing financial time series. Copyright © 2001 by John Wiley & Sons, Ltd.

Date: 2001
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