%0 Journal Article %T Combined Information Systems and Subinformation Systems
合成信息系统与子信息系统 %A SHAO Ming-Wen ZHANG Wen-Xiu MI Ju-Sheng %A
邵明文 %A 张文修 %A 米据生 %J 计算机科学 %D 2004 %I %X In this paper. by giving definition of object combined information systems, attribute combined information systems, sub-object information systems and sub-attibute information systems, discuss the relationship between them and the original information systems respectively ,at last giving some applications. %K Rough set %K Information systems %K Lower approximation %K Upper approximation
粗糙集理论 %K 信息系统 %K 知识发现 %K 子信息系统 %K 神经网络 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=EB58922099175351&yid=D0E58B75BFD8E51C&vid=4AD960B5AD2D111A&iid=38B194292C032A66&sid=205BE674D84A456D&eid=12DC19455C3A2FA8&journal_id=1002-137X&journal_name=计算机科学&referenced_num=2&reference_num=10