决策系统中约简的不一致分析  

Analysis of inconsistence in decision systems by rough sets

作　　者：邓大勇[1] 

机构地区：[1]浙江师范大学数理与信息工程学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2010年第4期431-436,共6页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省教育厅科研项目(Y200805421)

摘　　要：提出了用于刻画不一致程度的概念——不一致层次,讨论了不一致层次的性质;用3种粗糙集模型对决策系统中由约简引起的分类率、分类正确率、未分类率和不一致层次的变化进行了讨论.讨论结果对粗糙集理论的研究和实际应用具有一定的指导作用.A novel notion ＂the level of inconsistence＂ was presented to indicate the level of inconsistence in decision systems,its properties were discussed.The ratio of classification,exact classification,non-classification and the level of inconsistence before reduction with them after reduction in a decision system were compared.The results could be of advantage to rough sets in practice and theory.

关 键 词：粗糙集 不一致层次 约简 一般决策 可变精度粗糙集 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]