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'Autocorrelation spatiale'
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article/chapitre/communication
G. Henebry | 1995No standard techniques yet exist for assessing the predictive performance of models that simulate spatially-explicit processes. Spatial simulation models generate autocorrelation patterns that are a critical aspect of model prediction. These pat[...]
article/chapitre/communication
P. Aubry ; D. Debouzie | 2000Many ecologists use two-dimensional systematic sampling to estimate mean density of individuals over the domain sampled. They usually calculate the variance of the mean as if the sample were a simple random sample, using the unbiased estimator u[...]
article/chapitre/communication
A. Cerioli | 1997In this paper we suggest two modified chi-squared tests of independence in 2 x 2 tables when the data are spatially autocorrelated. For this purpose, we first derive the asymptotic distribution of standard test statistics based on the sample cro[...]
article/chapitre/communication
L. Celini ; J. Vaillant | 1999The spatio-temporal distribution of cotton plants, Gossypium hirsutum L., infested with Aphis gossypii (Glover) winged adults, is described in a plot located in Bangui, Central African Republic. Each cotton plant growing in the plot was examined[...]
article/chapitre/communication
