| Citation: | R Tolosana-Delgado, V Pawlowsky-Glahn, J J Egozcue. Simplicial Indicator Kriging. Journal of Earth Science, 2008, 19(1): 65-71.
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Indicator kriging (IK) is a spatial interpolation technique devised for estimating a conditional cumulative distribution function at an unsampled location. The result is a discrete approximation, and its corresponding estimated probability density function can be viewed as a composition in the simplex. This fact suggested a compositional approach to IK which, by construction, avoids all its standard drawbacks (negative predictions, not-ordered or larger than one). Here, a simple algorithm to develop the procedure is presented.
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