摘要
决策形式背景是在形式背景的基础上通过增加决策属性而得到的,相应的可生成条件格和决策格。基于这两个格中属性概念外延之间的关系提出属性粒协调决策形式背景这一概念,并从属性概念的角度给出决策形式背景现有的强协调性、弱协调性和协调性的新的描述方式,进一步解释属性粒协调决策形式背景与这三种决策形式背景之间的关系;最后,提出属性粒规则的概念,并给出以此为基础的规则获取方法。
A formal decision context is obtained by adding decision attribute in to a formal context, which contains a condition lattice and a decision lattice. Based on the relation of the attribute concepts＇ extents in the two lattices, the definition of attribute granular consistent formal decision context is proposed. Furthermore, by using the extents of attribute concepts, strong consistent, weak consistent and consistent formal decision contexts are anew described, and the relationships between the attribute granular consistent formal decision context and the three existing formal decision contexts are explained. Finally, the definition of attribute granular rule is proposed, and an approach to acquire decision rule on the basis of the attribute granular rule is given.
作者
万青
马盈仓
WAN Qing MA Yingcang(College of Science, Xi＇an Polytechnic University, Xi＇an 710048, China)
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第3期336-341,共6页
Journal of Northwest University（Natural Science Edition）
基金
西安工程大学博士科研启动基金资助项目(BS1528)
国家自然科学基金资助项目(11371014)
关键词
决策形式背景
属性概念
决策规则
属性粒规则
formal decision context
attribute concept
decision rule
attribute granular rule
