加权证据权模型和逐步证据权模型及其在个旧锡铜矿产资源预测中的应用

张生元; 成秋明; 张素萍; 夏庆霖

Volume 34 Issue 2

Mar. 2009

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Article Navigation > Earth Science > 2009 > 34(2): 281-286

ZHANG Sheng-yuan, CHENG Qiu-ming, ZHANG Su-ping, XIA Qing-lin, 2009. Weighted Weights of Evidence and Stepwise Weights of Evidence and Their Applications in Sn-Cu Mineral Potential Mapping in Gejiu, Yunnan Province, China. Earth Science, 34(2): 281-286.

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Weighted Weights of Evidence and Stepwise Weights of Evidence and Their Applications in Sn-Cu Mineral Potential Mapping in Gejiu, Yunnan Province, China

1.
Institute of Natural Resources and Environment Engineering, Shijiazhuang University of Economics, Shijiazhuang 050031, China
2.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China

Received Date: 2008-12-20
Publish Date: 2009-03-25

Abstract

Abstract

This paper proposes two kinds of new models of weight of evidence: weighted weights of evidence and stepwise weights of evidence to reduce the influence of correlation among evidence layers when hypothesis of conditional independence is not held.In the weighted weights of evidence model, an adjustment of weight of evidence is made to reduce the influence of correlation among evidence layers.In the stepwise model, each evidence layer is added into the logistic model as if a single layer whose weight can be calculated by using the previously calculated posterior probability as a new prior probability.These two models are compared with other models through a case study of calculating posterior probability maps for Sn-Cu mineral deposits in Gejiu, Yunnan, China.The result shows that both models are effective to reduce the influence of correlations among evidence layers on delineation of Sn-Cu anomalies.
- stepwise weights of evidence,
- weighted weights of evidence,
- logit model,
- Gejiu of Yunnan Province

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References(18)

References

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