双向变异S-概率粗集和它的属性概率性质  

Two direction variation S-probability rough sets and its attribute probability characters

作　　者：赵俊恺[1] 蔡成闻[1] 任雪芳[2] 

机构地区：[1]山东大学控制科学与工程学院,山东济南250061 [2]山东大学数学与系统科学学院,山东济南250100

出　　处：《山东大学学报（理学版）》2007年第10期27-30,共4页Journal of Shandong University(Natural Science)

基　　金：福建省自然科学基金资助项目(200650391);山东省自然科学基金资助项目(Y2004A04)

摘　　要：利用双向变异S-粗集的属性动态迁移特性,结合知识库中的统计信息,提出了双向变异S-概率粗集.讨论了双向变异S-概率粗集的属性概率性质,为获得动态的决策规则奠定了基础.利用上述讨论,给出了一个具体的应用实例.Based on attribute＇s dynamic transfer property of two direction variation S-rough sets and statistical information in knowledge base, the two direction variation S- probability rough sets was put forward. The attribute＇ s probability characters of two direction variation S- probability rough sets were discussed. These properties are the bases of dynamic decision-making. Using the above discussion, a special application example was given.

关 键 词：双向变异S-粗集 属性迁移 双向变异S-概率粗集 概率近似精度 概率粗糙度 

分 类 号：O159[理学—数学]