Relatore: 
          Giacomo Bormetti
          
            - University of Bologna
          
          
 
    
      giovedì 27 settembre 2018
      
              alle ore
              12.00 
      
      
       Polo Santa Marta, Via Cantarane 24, Sala Vaona
            
  
 
     
  When modeling correlation dynamics, tackling the issue of positive definiteness is a challenging task. 
At high frequencies in a multivariate financial setting, observational noise and asynchronicity makes the goal even more difficult. 
After reviewing different observation-driven approaches available in literature, I will focus on a recently proposed modeling framework based on regular vines.