2 papers
stat.ME2026
A robust nonparametric test for spatial isotropy in lattice data
Jana Gierse, Roland Fried
This paper proposes a robust test for assessing isotropy based on the variogram of spatial data on a two-dimensional regular grid. The test is based on the non-robust subsampling t…
stat.ME2024
Nonparametric directional variogram estimation in the presence of outlier blocks
Jana Gierse, Roland Fried
This paper proposes robust estimators of the variogram, a statistical tool that is commonly used in geostatistics to capture the spatial dependence structure of data. The new estim…