Expanding tolerance RST models based on cores of maximal compatible blocks

Authors:
Chen Wu;Xiaohua Hu;Jingyu Yang;Xibei Yang
Affiliations:
Dept. of Computer Science and Technology, Nanjing University of Science and Technology, Nanjing, Jiangsu, China;College of Information Science and Technology, Drexel University, Philadelphia, PA;Dept. of Computer Science and Technology, Nanjing University of Science and Technology, Nanjing, Jiangsu, China;Dept. of Computer Science and Technology, Nanjing University of Science and Technology, Nanjing, Jiangsu, China
Venue:
RSCTC'06 Proceedings of the 5th international conference on Rough Sets and Current Trends in Computing
Year:
2006

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Abstract

Based on tolerance relation, this paper proposes three knowledge representation systems and then discusses their properties from a new prospective of cores of maximal compatible blocks. It also discusses the relationships of the three knowledge representation systems with the other two proposed by Kryszkiewicz M. and Wanli C. respectively. It considers the measurements such as the accuracy measurements, the rough entropies of knowledge. It also defines and studies rough entropies of set about knowledge in the three systems and obtains several meaningful theorems.