%0 Journal Article
%T Rough Set Approximations and Information Granules<br>粗糙集近似与信息粒度
%A XU You-Hong
%A ZHU Ding-Hong
%A <br>徐优红
%A 竺定宏
%J 计算机科学
%D 2008
%I 
%X In this paper,we prove that basic information granules in Pawlak information systems,incomplete information systems,and incomplete fuzzy information systems can be respectively described as three types of rough set approximations. By using the upper approximations of attribute value of an object with respect to the object-attribute approximation space,we can obtain an object set in which all the objects have the same or similar information,that is,we can transform the object-attribute value into basic infor...
%K Rough sets
%K Information systems
%K Approximation operators
%K Fuzzy sets
%K Information granules<br>粗糙集
%K 信息系统
%K 近似算子
%K 模糊集
%K 信息粒度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=BD485FB80408F6A7D644CDD717903A7F&yid=67289AFF6305E306&vid=6209D9E8050195F5&iid=38B194292C032A66&sid=8B59EA573021D671&eid=A1266CF37D675CF1&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=6