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Research on Granular Computing Based on Rough Set Theory and Its Application

Linlin Zhou

Abstract

Rough Set Theory propose that knowledge is granular,but it does not quantify this granular knowledge.In this paper,we pro-pose definitions of granular amount of knowledge,granular particle amount of knowledge,average granular particle amount of kowledge,approach 1 coefficient and granularity of knowledge;We introduce a method of reduction of knowledge to avoid blindness when choosing the reduction of attributes;Also,the time complexity is analyzed;Finally,the validity is shown through an example of maritime accidents.

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Key concepts: Granular computing, Rough set, Granularity, Computer science, Reduction (mathematics), Blindness, Set (abstract data type), Particle (ecology)