| 基于Rough集的规则分辨矩阵研究 |
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| 引用本文： | 李嘉,王加阳.基于Rough集的规则分辨矩阵研究[J].计算机工程与应用,2006,42(11):27-31,34. |
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| 作者姓名： | 李嘉 王加阳 |
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| 作者单位： | 中南大学信息科学与工程学院,长沙,410083;中南大学信息科学与工程学院,长沙,410083 |
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| 摘 要： | 文章提出了一种新的规则分辨矩阵,相比原对象分辨矩阵节省了存储空间,减少了比较计算量。在此规则分辨矩阵的基础上,提出了求决策信息系统信息论观点下核属性及约简的方法,还利用此矩阵分析了约简过程中决策信息系统不确定性的变化,并对同一决策信息系统的不同约简的不确定性差异进行了比较。
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| 关 键 词： | 粗糙集 分辨矩阵 核 约简 不确定性 |
| 文章编号： | 1002-8331-（2006）11-0027-05 |
| 收稿时间： | 2005-12-01 |
| 修稿时间： | 2005-12-01 |
Research on Rule Discernibility Matrix Based on Rough Set Theory |
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| Li Jia,Wang Jiayang.Research on Rule Discernibility Matrix Based on Rough Set Theory[J].Computer Engineering and Applications,2006,42(11):27-31,34. |
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| Authors: | Li Jia Wang Jiayang |
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| Affiliation: | College of Information Science and Engineering,Central South University,Changsha 410083 |
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| Abstract: | A new rule discernibility matrix is presented.Compared with object discernibility matrix,storage space and computational efforts are saved in this one.Based on this kind of rule discernibility matfix,a method of computing a core and reduction is presented.And we analyse the uncertainty of decision information system when reduction is made. In addition,the differences of the uncertainty of different reduction sets to the same decision information system are compared. |
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| Keywords: | rough set discernibility matrix core reduction uncertainty |
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