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Details van artikel 5 van 14 gevonden artikelen
| Titel: |
Approximate lognormality of the sample semi-variogram under a gaussian process |
| Auteur: |
Baczkowski, A.J Mardia, K.V |
| Verschenen in: |
Communications in statistics |
| Paginering: | Jaargang 16 (1987) nr. 2 pagina's 571-585 |
| Jaar: |
1987 |
| Inhoud: |
The semi-variogram is widely used in geostatistical data analyses. It is estimatedby the sample semi-variogram. Although some theoretical work has been done on its sampling distribution for a Gaussian process these results are not of immediate practical usage because of the problems induced by the presence of spatial inter-correlations. In this paper various simulation studies are reported which give overwhelming evidence that a logarithmic transformation of the semi-variogram gives approximate normality for moderately large sample sizes. This result is theoretically expected under certain conditions. A robust estimator of the semi-variogram was also studied using the simulations. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 14 gevonden artikelen
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