F. de Bastiani

Inference in Spatial Models: Applicability and Comparison of the Wendland and Matérn Covariance Families

This paper investigates inference and diagnostic procedures in linear Gaussian spatial models using the Wendland family of covariance functions, compared with the Matérn family, as a spatial dependence structure. We extend the Spatial Dependency Index (SDI) and derive expressions for the practical range for both covari...

Visual Tools for Detecting Influential Observations in Bivariate Geostatistical Data

Local Influence Analysis in a Gaussian Spatiotemporal Model

Spatiotemporal models are widely used to describe data collected over space and time, where the specification of the covariance structure plays a crucial role in statistical inference. In this work, we extend the local influence methodology to assess the adequacy of the temporal independence assumption in a Gaussian...