摘要
文中针对决策形式背景研究基于对象导出三支概念格的规则约简问题,提出了三支决策规则、必要决策规则的概念,并讨论了它们的基本性质。以此为基础,提出了决策形式背景三支规则协调集的概念,给出了三支规则协调集的判定定理,结合区分矩阵和区分函数给出了三支规则约简方法。最后通过实例证明了所提约简方法的有效性。
This paper studied the attribute reduction for decision formal context based on three way decision rules induced from three way concept lattice.It proposed the notions of three way decision rules and necessary three way decision rules and discussed their basic properties,presented the concept of consistent set with respect to three way decision rule and examined the judgment theorem for consistent set.Accordingly,based on discernibility matrix and discernibility function,this paper presented the reduction method and an illustrative example.
作者
林洪
秦克云
LIN Hong;QIN Ke-yun(College of Mathematics,Southwest Jiaotong University,Chengdu 611756,China)
出处
《计算机科学》
CSCD
北大核心
2019年第3期248-252,共5页
Computer Science
基金
国家自然科学基金(61473239
61372187)资助
关键词
决策形式背景
概念格
三支规则协调集
三支规则约简
Decision formal context
Concept lattice
Three way rule consistent set
Three way rule reduction
