Analysis of local influence in geostatistics using Student's t -distribution

R.A.B. Assumpção, M.A. Uribe-Opazo and M. Galea

Journal of Applied Statistics, 2014, vol. 41, issue 11, 2323-2341

Abstract: This article aims to estimate parameters of spatial variability with Student's t -distribution by the EM algorithm and present the study of local influence by means of two methods known as likelihood displacement and Q -displacement of likelihood, both using Student's t -distribution with fixed degrees of freedom (ν). The results showed that both methods are effective in the identification of influential points.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:taf:japsta:v:41:y:2014:i:11:p:2323-2341

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DOI: 10.1080/02664763.2014.909793

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