Some Generalizations of Gneiting's Univariate and Bivariate Models

Datum

01.11.2018

Zeit

13:30 - 14:30

Sprecher

Prof. Dr. Martin Schlather

Zugehörigkeit

Universität Mannheim

Serie

TUD Mathematik AG Analysis & Stochastik

Sprache

en

Hauptthema

Mathematik

Andere Themen

Mathematik

Host

Prof. Dr. Z. Sasvári

Beschreibung

(joint work with Olga Moreva) Gaussian random fields are completely characterized by their mean and their covariance function. In applications suitable classes of parametrized covariance functions are needed. Whilst in the univariate case a large number of classes is available, not that many classes exist in the multivariate case. In this talk we mainly focus on bivariate covariance functions that are generalizations or modifications of models that have been suggested by Tilmann Gneiting. In particular, the univariate cutoff embedding technique is transferred to the bivariate case. On that way, the results for the univariate case had to improved. As examples for the bivariate cutoff technique, we consider Gneiting's bivariate Matern model and modifications thereof. Finally, we show that Gneiting's generalized Cauchy model can be combined with the fractional Brownian motion to get a parametric model that covers both the stationary and the intrinsically stationary case.

Links

• AG Analysis & Stochastik

Letztmalig verändert: 23.10.2018, 15:57:36