Computer Science ›› 2014, Vol. 41 ›› Issue (3): 245-248.

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Approximate Reduction for Objects in Inconsistent Decision Tables

ZHAI Cui-hong and QIN Ke-yun   

  • Online:2018-11-14 Published:2018-11-14

Abstract: This paper studied the approximate reduction for the objects in the inconsistent decision tables.Firstly,the judgment theorems with respect to the approximate reduction were obtained.Secondly,the calculation method of the approximate reduction was given by discernibility matrices and functions.Finally,Compared to the overall reduction for a decision table,the reduction for objects in the decision table not only can get more concise knowledge,but also has good application value in real life.

Key words: Decision tables,Approximate reduction,Discernibility matrices,Discernibility functions

[1] Pawlak Z.Rough sets[J].International Journal of Computer andInformation Science,1982,11:341-356
[2] Pawlak Z.Rough Sets:Theoretical Aspects of Reasoning about Data[M].Boston:Kluwer Academic Publishers,1991
[3] Zhang X H,Zhou B,Li P.A general frame for intuitionistic fuzzyrough sets[J].Information Sciences,2012,216:34-49
[4] 张文修,梁怡,吴伟志.信息系统与知识发现[M].北京:科学出版社,2003
[5] 杜卫锋,秦克云.决策表正域约简区分函数条件的改进[J].计算机工程与应用,2006,42(20):16-18
[6] Kryszkiewicz M.Comparative study of alternative types ofknowledge reduction in inconsistent systems[J].International journal of intelligent systems,2001,16:105-120
[7] 张文修,吴伟志,粱吉业,等.粗糙集理论与方法[M].北京:科学出版社,2001
[8] Skowron A,Rauszer C.The discernibility matrices and functions in information systems.Intelligent Decision Support:Handbook of Applications and Advances to Rough Sets Theory[M].Dordrecht:Kluwer Academic Publishers,1992:331-362
[9] Yao Y Y,Zhao Y.Discernibility matrix simplication for con-structing attribute reducts[J].Information Sciences,2009,179(7):867-882
[10] 蒋云良,杨章显,刘勇.不协调信息系统快速属性分布约简方法[J].自动化学报,2012,8(3):382-388

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