A Comparison of Modified Fuzzy Weights of Evidence, Fuzzy Weights of Evidence, and Logistic Regression for Mapping Mineral Prospectivity

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• 作者：Daojun Zhang (1)
  Frits Agterberg (2)
  Qiuming Cheng (1) (3)
  Renguang Zuo (1)
  
• 关键词：Conditional independence ; Mineral resource assessment ; Data integration ; GIS modeling ; Fujian Province
• 刊名：Mathematical Geosciences
• 出版年：2014
• 出版时间：October 2014
• 年：2014
• 卷：46
• 期：7
• 页码：869-885
• 全文大小：2,516 KB
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• 作者单位：Daojun Zhang (1)
  Frits Agterberg (2)
  Qiuming Cheng (1) (3)
  Renguang Zuo (1)
  
  1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, 430043, China
  2. Geological Survey of Canada, 601 Booth Street, Ottawa, ON, K1A0E8, Canada
  3. Department of Earth and Space Science and Engineering, York University, Toronto, M3J1P3, Canada
  
• ISSN：1874-8953

文摘

Weights of evidence and logistic regression are two of the most popular methods for mapping mineral prospectivity. The logistic regression model always produces unbiased estimates, whether or not the evidence variables are conditionally independent with respect to the target variable, while the weights of evidence model features an easy to explain and implement modeling process. It has been shown that there exists a model combining weights of evidence and logistic regression that has both of these advantages. In this study, three models consisting of modified fuzzy weights of evidence, fuzzy weights of evidence, and logistic regression are compared with each other for mapping mineral prospectivity. The modified fuzzy weights of the evidence model retains the advantages of both the fuzzy weights of the evidence model and the logistic regression model; the advantages being (1) the predicted number of deposits estimated by the modified fuzzy weights of evidence model is nearly equal to that of the logistic regression model, and (2) it can deal with missing data. This method is shown to be an effective tool for mapping iron prospectivity in Fujian Province, China.