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Markov Switching Garch Models Of Currency Crises In Southeast Asia, Celso Brunetti, Roberto S. Mariano, Chiara Scotti, Augustine H. H. Tan

Research Collection School Of Economics

This paper develops a model which is able to forecast exchange rate turmoil. Our starting point relies on the empirical evidence that exchange rate volatility is not constant. In fact, the modeling strategy adopted refers to the vast literature of the GARCH class of models, where the variance process is explicitly modeled. Further empirical evidence shows that it is possible to distinguish between two different regimes: îordinaryî versus îturbulenceî. Low exchange rate changes are associated with low volatility (ordinary regime) and high exchange rate devaluations go together with high volatility. This calls for a regime switching approach. In our model …