ABC Shadow algorithm: a tool for statistical analysis of spatial patterns

This talk presents an original ABC algorithm, {\it ABC Shadow}, that can be applied to sample posterior densities that are continuously differentiable. The proposed algorithm solves the main condition to be fulfilled by any ABC algorithm, in order to be useful in practice. This condition requires enough samples in the parameter space region, induced by the observed statistics. The algorithm is tuned on the posterior of a Gaussian model which is entirely known, and then it is applied for the statistical analysis of several spatial patterns. These patterns are issued or assumed to be outcomes of point processes. The considered models are: Strauss, Candy and area-interaction
  • ABC Shadow algorithm: a tool for statistical analysis of spatial patterns
  • 2018-04-13T10:30:00-03:00
  • 2018-04-13T11:30:00-03:00
  • This talk presents an original ABC algorithm, {\it ABC Shadow}, that can be applied to sample posterior densities that are continuously differentiable. The proposed algorithm solves the main condition to be fulfilled by any ABC algorithm, in order to be useful in practice. This condition requires enough samples in the parameter space region, induced by the observed statistics. The algorithm is tuned on the posterior of a Gaussian model which is entirely known, and then it is applied for the statistical analysis of several spatial patterns. These patterns are issued or assumed to be outcomes of point processes. The considered models are: Strauss, Candy and area-interaction
  • When 13/04/2018 de 10:30 a 11:30 (America/Montevideo / UTC-300)
  • Where Salón de Seminarios. Centro de Matemática
  • Contact
  • Speaker Radu Stefan Stoica
  • Add event to calendar iCal