Combining indicator patterns in weights of evidence modeling for resource evaluation |
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| Authors: | Frederik P Agterberg |
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| Institution: | 1. Geological Survey of Canada, 601 Booth Street, K1A 0E8, Ottawa, Canada
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| Abstract: | The weights of evidence model for combining indicator patterns in mineral resource evaluation is briefly explained with emphasis on the effect of undiscovered deposits on the estimation of the weights and posterior probabilities. A group of six statistical tests is proposed for analyzing the interaction of two or three indicator patterns with the point pattern for mineral deposits. A distinction is made between statistics that depend on choice of unit cell size and those that are approximately or completely independent of it. Finally, weights of evidence are compared to regression coefficients obtained by means of the logistic model. |
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