(e.g. Gaussian; second-order
stationarity; degree of temporal and spatial autocorrelation).
Furthermore,
correlation in time and space is characterised
by correlogram/variogram functions. Categorical data (3) dif-
fer from numerical data (1, 2), because the categories are not
measured on a numerical scale.
A software tool, the data uncertainty engine (DUE), for
supporting the assessment of data
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