Seminario: 07 maggio 2018 - Marta Nai Ruscone
Lunedì 07 maggio, alle ore 14:30, Aula "Amministrazione" (Sapienza Università di Roma, Via del Castro Laurenziano 9, Roma - Facoltà di Economia, 4° piano)
Relatore: Marta Nai Ruscone (School of Economics and Management LIUC, Castellanza (VA))
Titolo del seminario: "Model-based Clustering with R-vine".
ABSTRACT:
Finite mixtures are applied to perform model-based clustering of multivariate data. Existing models are not flexible enough for modelling the dependence of multivariate data since they rely on potentially undesirable correlation restrictions to be computationally tractable. We discuss a model-based clustering method via R-vine copula to understand the complex and hidden dependence patterns in correlated multivariate data. One of the advantages of this approach is that it accounts for the tail asymmetry of the data by using blocks of asymmetric bivariate copulas. We use simulated and real datasets to illustrate the proposed procedure.
Tutti gli interessati sono cordialmente invitati a partecipare.