Optimal predictive design augmentation for spatial generalised linear mixed models

Evangelos Evangelou, Zhengyuan Zhu

Research output: Contribution to journalArticle

6 Citations (Scopus)
116 Downloads (Pure)

Abstract

A typical model for geostatistical data when the observations are counts is the spatial generalised linear mixed model. We present a criterion for optimal sampling design under this framework which aims to minimise the error in the prediction of the underlying spatial random effects. The proposed criterion is derived by performing an asymptotic expansion to the conditional prediction variance. We argue that the mean of the spatial process needs to be taken into account in the construction of the predictive design, which we demonstrate through a simulation study where we compare the proposed criterion against the widely-used space-filling design. Furthermore, our results are applied to the Norway precipitation data and the rhizoctonia disease data.
Original languageEnglish
Pages (from-to)3242-3253
Number of pages12
JournalJournal of Statistical Planning and Inference
Volume142
Issue number12
Early online date31 May 2012
DOIs
Publication statusPublished - Dec 2012

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