4 papers · 1 filter
Model-based estimation and imputation with torus missing values
Luca Greco, Lucia Filippozzi, Claudio Agostinelli
This paper addresses the problem of parameter estimation and model-based imputation for multivariate circular data lying on a p-dimensional torus in the presence of missing values.…
Estimation of a multivariate von Mises distribution for contaminated torus data
Giulia Bertagnolli, Luca Greco, Claudio Agostinelli
The occurrence of atypical circular observations on the torus can badly affect parameter estimation of the multivariate von Mises distribution. This paper addresses the problem of…
Weighted likelihood methods for robust fitting of wrapped models for -torus data
Claudio Agostinelli, Luca Greco, Giovanni Saraceno
We consider robust estimation of wrapped models to multivariate circular data that are points on the surface of a -torus based on the weighted likelihood methodology.Robust mode…
Network depth: identifying median and contours in complex networks
Giulia Bertagnolli, Claudio Agostinelli, Manlio De Domenico
Centrality descriptors are widely used to rank nodes according to specific concept(s) of importance. Despite the large number of centrality measures available nowadays, it is still…