%0 Journal Article
%T Research on Approximation Operator in Generalized Variable Precision Rough Set Model<br>在VPRS模型中保持边界的属性约简方法研究
%A SUN Shi-Bao
%A QIN Ke-Yun
%A <br>孙士保
%A 秦克云
%J 计算机科学
%D 2007
%I 
%X Attribute reduction approaches at hand in variable precision rough set model are discussed, the shortages of reduct are found. Definitions of attribute reduction for preserving lower approximations, upper approximations, boundary regions and unpredictable
%K Variable precision rough set model
%K Attribute reduction
%K Boundary regions
%K Algorithm<br>变精度粗糙集模型
%K 属性约简
%K 边界
%K 算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=E2D6B49C7FBB3C9BC0DEDCB6BCD5501F&yid=A732AF04DDA03BB3&vid=339D79302DF62549&iid=DF92D298D3FF1E6E&sid=BBF7D98F9BEDEC74&eid=C5F8B8CB20F1B3D8&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=8