Covering fuzzy rough set based on multi-granulations
Proceedings of the International Conference on Uncertainty Reasoning and Knowledge Engineering, URKE 2011（2011）
摘要
This paper extends the rough set model based on multi-granulations to the covering fuzzy rough set model based on multi-granulation, which is named MGCFRS. The lower and upper approximations of fuzzy sets in a covering approximation space are defined and some basic properties about the MGCFRS are investigated. One can see that the basic properties of MGRS are special cases of MGCFRS model. © 2011 IEEE.
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关键词
covering,fuzzy rough sets,multi-granulations,fuzzy set,computer model,fuzzy set theory,rough set,knowledge based system,rough set theory
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