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Cumulative Impulse Response Functions for a Class of Threshold-Asymmetric GARCH Processes
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 Title & Authors
Cumulative Impulse Response Functions for a Class of Threshold-Asymmetric GARCH Processes
Park, J.A.; Baek, J.S.; Hwang, S.Y.;
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 Abstract
A class of threshold-asymmetric GRACH(TGARCH, hereafter) models has been useful for explaining asymmetric volatilities in the field of financial time series. The cumulative impulse response function of a conditionally heteroscedastic time series often measures a degree of unstability in volatilities. In this article, a general form of the cumulative impulse response function of the TGARCH model is discussed. In particular, We present formula in their closed forms for the first two lower order models, viz., TGARCH(1, 1) and TGARCH(2, 2).
 Keywords
Cumulative impulse response function;persistent;asymmetric-TGARCH;
 Language
English
 Cited by
 References
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