|Table of Contents|

Incomplete decision rule acquisition based on multigranulation theory

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2013年01期
Page:
12-
Research Field:
Publishing date:

Info

Title:
Incomplete decision rule acquisition based on multigranulation theory
Author(s):
Wang Lijuan12Yang Xibei12Yang Jingyu1Wu Chen2
1.School of Computer Science and Engineering,NUST,Nanjing 210094,China; 2.Department of Computer Science and Engineering,Jiangsu University of Science and Technology, Zhenjiang 212003,China
Keywords:
multigranulation theoryincomplete decision systemapproximate distribution reductdecision rule acquisition
PACS:
TP18
DOI:
-
Abstract:
Multigranulation theory is introduced into the incomplete decision systems.According to the incompleteness,the similarity relationbased incomplete multigranulation rough set model is proposed combining with the nonsymmetric similarity relation,and its properties are discussed.The investigation focuses on the attribute reductions and decision rule acquisitions in the new model.Multigranulation theory and approximate distribution reduction are combined to solve the two problems,and the concept of the incomplete multigranulation approximate distribution reduction is presented.All the simplified certain decision rules and the simplified possible decision rules are obtained.A numerical example is employed to substantiate the conceptual arguments.The research results show that the methods of multigranulation approximate distribution reduct and rule acquisition are more reasonable and effective than the original methods in single granulation.

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Last Update: 2013-02-15