Journal of Guangdong University of Technology ›› 2006, Vol. 23 ›› Issue (4): 93-97.

• Comprehensive Studies • Previous Articles     Next Articles

Research on Generalized Rough Sets Based on Fine Covering

  

  1. (1.Faculty of Computer,Guangdong University of Techology,Guangzhou 510090,China;2.Department of Automation,Foshan University,Foshan 528000,China)
  • Online:2006-11-10 Published:2006-11-10

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Abstract: Covering generalized rough sets is an important development to the Pawlak rough sets theory.In this paper,from the topological view,some concepts of generalized rough sets are defined again by the use of adjacent cluster.Their different characteristics are also analysed.Some special properties of upper and low approximation operations based on the fine covering are studied.The method of approximation operations of the fine covering is presened.

Key words: generalized rough set； minimum element； fine covering；

[1] Zakowsk iW.Approxim ations in the Space(U.II). DemonstratioM athem atica . 1983

[2] Pawlak Z.Rough Sets,Theoretical Aspects of Reasoning about Data. . 1991

[3] Pomykala J A.Approxim ation Operations in Approxim ation Space. Bu lletion of the Polish Academy of Sc ience . 1987
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