| Activity Number: | 92 
                            	- Time Series and Finance | 
                    
                        | Type: | Contributed | 
                    
                        | Date/Time: | Monday, August 9, 2021 : 10:00 AM to 11:50 AM | 
                    
                        | Sponsor: | Business and Economic Statistics Section | 
                
                    
                        | Abstract #317749 |  | 
                    
                        | Title: | On a Quantile Autoregressive Conditional Duration Model Applied to High-Frequency Financial Data | 
                
                
                    | Author(s): | Helton Saulo* and Narayanaswamy Balakrishnan and Roberto Vila | 
                
                    | Companies: | University of Brasilia and McMaster University and University of Brasilia | 
                
                
                    | Keywords: | Skewed Birnbaum-Saunders distribution; 
                            Conditional quantile; 
                            ECM algorithm; 
                            Monte Carlo simulation; 
                            Financial transaction data | 
                
                    | Abstract: | 
                             Autoregressive conditional duration (ACD) models are primarily used to deal with data arising from times between two successive events. These models are usually specified in terms of a time-varying conditional mean or median duration. In this paper, we relax this assumption and consider a conditional quantile approach to facilitate the modeling of different percentiles. The proposed ACD quantile model is based on a skewed version of Birnbaum-Saunders distribution, which provides better fitting of the tails than the traditional Birnbaum-Saunders distribution, in addition to advancing the implementation of an expectation conditional maximization (ECM) algorithm. A Monte Carlo simulation study is performed to assess the behavior of the model as well as the parameter estimation method and to evaluate a form of residual. A real financial transaction data set is finally analyzed to illustrate the proposed approach.   
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                    Authors who are presenting talks have a * after their name.