Positive definite functions on spheres: some statistical and mathematical issues
Este martes 17 de noviembre a las 11:30 horas Pier Giovanni Bissiri, académico en el Department of Statistical Sciences, University of Bologna, Italy, dictará la charla denominada “Positive definite functions on spheres: some statistical and mathematical issues”.
Enlace de Zoom
ID de reunión: 894 8071 0728
Código de acceso: 830705
Positive definite functions are a key mathematical tool in geostatistics. If the study region is geographically extensive, the space which needs to be considered is the spherical surface equipped withthe geodesic distance. After reviewing some general results about positive definite functions on spheres, this talk will focus on Bayesian nonparametric models for spatial covariance functions for global data. Then, it will review main known results about strict positive definiteness on spheres in the isotropic case and will show a recent result about the axially symmetric case.