DETERMINATION OF FUZZY COMPREHENSIVE ESTIMATION WEIGHTING COEFFICIENT BASED ON ROUGH SET THEORY

doi:10.3863/j.issn.1000-2634.2001.01.005

西南石油大学学报(自然科学版) ›› 2001, Vol. 23 ›› Issue (3): 16-18(5.DOI: 10.3863/j.issn.1000-2634.2001.01.005

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DETERMINATION OF FUZZY COMPREHENSIVE ESTIMATION WEIGHTING COEFFICIENT BASED ON ROUGH SET THEORY

SHI Xiao-fei¹ ZHAO Qing-fei²

Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China

Received:2000-10-27 Revised:1900-01-01 Online:2001-08-20 Published:2001-08-20

Abstract

Abstract: Fuzzy comprehensive estimation plays an important role in predicting favorite oil and gas-bearing regions and analyzing quantitatively their quality order in trap. In this method, it is very important to determine the geological factor weighting coefficient. Author of the paper applies Rough Set theory to de-
termine significance of each geological factors and then shift significance of attribution to weighting coefficient, which overcomes the shortcomings of subjectivity in determining weighting coefficient with the traditional method and improve the accuracy of evaluation. Lastly, an example of evaluating traps in south western Tarim Depression in Tarim Basin using this method to
induce weighting coefficient of geological factors is given.

Key words: rough set, weighting coefficient, trap, fuzzy comprehensive estimation

CLC Number:

P618.130.22

SHI Xiao-fei ZHAO Qing-fei. DETERMINATION OF FUZZY COMPREHENSIVE ESTIMATION WEIGHTING COEFFICIENT BASED ON ROUGH SET THEORY[J]. 西南石油大学学报(自然科学版), 2001, 23(3): 16-18(5.

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DETERMINATION OF FUZZY COMPREHENSIVE ESTIMATION WEIGHTING COEFFICIENT BASED ON ROUGH SET THEORY

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