摘要
犹豫模糊信息系统是对传统的信息系统的一种推广。首先,在犹豫模糊信息系统中利用犹豫模糊值的得分函数,定义了一种优势关系。通过用这种优势关系替代经典粗糙集理论中的不可分辨关系,建立了一种基于优势关系的粗糙集模型。此外,为了简化知识表示,提出了一种消除冗余信息的属性约简方法,并通过一个实例说明了该方法的有效性。
Hesitant fuzzy information systems are generalized types of traditional information systems.First,a dominance relation is defined by the score function of hesitant fuzzy value in hesitant fuzzy information systems.By introducing the dominance relation to hesitant fuzzy information systems,a dominance-based rough set model was established through replacing the indiscernibility relation in classic rough set theory with the dominance relation.Furthermore,to simplify the knowledge representation,an attribute reduction approach was put forward to eliminate the redundant information.An example is provided to illustrate the validity of this approach.
作者
贺艳平
张海东
HE Yan-ping;ZHANG Hai-dong(School of Electrical Engineering,Northwest Minzu University,Lanzhou 730030,China;School of Mathematics and Computer Science,Northwest Minzu University,Lanzhou 730030,China)
出处
《唐山师范学院学报》
2020年第3期1-5,共5页
Journal of Tangshan Normal University
基金
国家自然基金资助项目(61966032)
甘肃省高等学校科学研究项目(2016B-005)
西北民族大学中央高校基本科研业务费项目(31920170010)。
关键词
优势关系
优势粗糙集
犹豫模糊信息系统
约简
dominance relation
dominance-based rough set
hesitant fuzzy information systems
reduction
