%0 Journal Article
%T Analysis of Characteristics of Reducts in Variable Precision Rough Sets<br>变精度粗糙集模型约简特征分析*
%A ZHOU Jie
%A WANG Jia-yang
%A LUO An
%A <br>周杰
%A 王加阳
%A 罗安
%J 计算机应用研究
%D 2007
%I 
%X The paper illuminated important differences between classical rough sets and variable precision rough sets.In variable precision rough sets,there is no non-monotonic decreasing characteristics in quality of classification and relative positive-region and bounce phenomena maybe occur,so the process of reduction is not stabile.Though the change of lower approximation also break non-monotonic decreasing principle,bounce phenomena don't occur and stabile process of reduction can be gotten.The equivalence among quality of classification,relative positive-region and lower approximation is not exit in variable precision rough sets,attributes reduction becomes multiform.
%K variable precision rough sets
%K non-monotonic decreasing
%K bounce phenomena<br>变精度粗糙集
%K 非单调递减
%K 跳跃现象
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=C793235A4E87B8F6A4D29B175BD892A3&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=DF92D298D3FF1E6E&sid=F3090AE9B60B7ED1&eid=59906B3B2830C2C5&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=7