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This paper proposes a new model that captures the interaction between duration and magnitude of changes in asset prices … Heteroskedasticity (EGARCH) model of Nelson (1991) and the Logarithmic Conditional Duration (Log-ACD) model of Bauwens and Giot (2000 …). Despite having the EGARCH model as a special case, the objective of the model is not trying to model conditional duration and …
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This paper generalizes the ACD models of Engle and Russell (1998) using the so-called q-Weibull distribution as the conditional distribution. The new specification allows the hazard function to be non-monotonic. We document that the q-Weibull distribution recently suggested in physics as a...
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