%0 Journal Article
%T The Rough Elements in the Rough Set:Their Structures and Generalizations<br>粗集中粗元的结构及其拓广
%A 祝峰
%A 何华灿
%J 计算机科学
%D 2000
%I 
%X This paper gives a deep discussion about the structures of rough elements in rough sets and generalizes the rough element concept.With the concepts of the lower rough element and upper rough element,it presents the role and the nature of rough elements.
%K Rough set
%K Proper rough element
%K Rough element
%K Upper rough element
%K Lower rough element<br>粗集
%K 粗元
%K 知识发现
%K 数据挖掘
%K 数据库
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=FAC34FE479716FDC&yid=9806D0D4EAA9BED3&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=16D8618C6164A3ED&eid=7C3A4C1EE6A45749&journal_id=1002-137X&journal_name=计算机科学&referenced_num=2&reference_num=8