变精度双向S-粗集及其应用  

Variable Precision Two Direction S-Rough Sets and Its Applications

作　　者：王洪凯[1] 胡海清[1] 姚炳学[1] 

机构地区：[1]山东大学数学与系统科学学院,济南250100

出　　处：《计算机工程与应用》2003年第26期31-33,共3页Computer Engineering and Applications

基　　金：国家自然科学基金(编号:70271048);山东省自然科学基金(编号:Y2001G07)

摘　　要：提出基于副集的双向S-粗集,变精度双向S-粗集;给出基于副集的双向S-粗集,变精度双向S-粗集的数学结构;给出变精度双向S-粗集的存在背景和意义解释。变精度双向S-粗集是对双向S-粗集理论的完善和发展。This paper puts forward two direction S-rough sets based on assistant sets and variable precision two direc-tion S-rough sets,and presents their mathematics structures,the existing background and meaning explanation of variable precision two direction S-rough sets.Variable precision two direction S-rough sets is a complement to two direction S-rough sets theory.

关 键 词：S-粗集 副集 生成集 变精度双向S-粗集 

分 类 号：O159[理学—数学]