Local spatial-predictor selection

Authors

Jonathan Bradley, Ohio State University
Noel Cressie, University of WollongongFollow
Tao Shi, Ohio State University

Publication Date

2013

Recommended Citation

Bradley, Jonathan; Cressie, Noel; and Shi, Tao, Local spatial-predictor selection, Centre for Statistical and Survey Methodology, University of Wollongong, Working Paper 9-13, 2013, 13.
https://ro.uow.edu.au/cssmwp/119

Abstract

Consider the problem of spatial prediction of a random process from a spatial dataset. Global spatial-predictor selection provides a way to choose a single spatial predictor from a number of competing predictors. Instead, we consider local spatial-predictor selection at each spatial location in the domain of interest. This results in a hybrid predictor that could be considered global, since it takes the form of a combination of local predictors; we call this the locally selected spatial predictor. We pursue this idea here using the (empirical) deviance information as our criterion for (global and local) predictor selection. In a small simulation study, the relative performance of this combined predictor, relative to the individual predictors, is assessed.