| 不一致决策表的值约简方法 |
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| 引用本文： | 兰聪花,陈晓云.不一致决策表的值约简方法[J].计算机工程与设计,2010,31(4). |
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| 作者姓名： | 兰聪花 陈晓云 |
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| 作者单位： | 1. 兰州工业高等专科学校电子信息工程系,甘肃,兰州,730050
2. 兰州大学信息科学与工程学院,甘肃,兰州,730000 |
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| 摘 要： | 对目前求不一致决策表最简规则方法存在的问题进行了分析,提出了一种构造区分矩阵的方法,能更好地适用于多决策属性存在的决策表中.借助区分矩阵进行值约简,提出了一种新的规则提取算法.利用属性的重要度来描述条件属性所提供的知识对决策表的影响程度,引入规则准确度来衡量算法是否造成决策表的新的不一致规则.该算法不会破坏决策系统中一致规则和不一致规则所蕴含的信息量,保持约简前后规则的准确度不变.
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| 关 键 词： | 粗糙集 区分矩阵 值约简 规则准确度 属性重要度 |
Value reduction method of inconsistent decision table |
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| LAN Cong-hua,CHEN Xiao-yun.Value reduction method of inconsistent decision table[J].Computer Engineering and Design,2010,31(4). |
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| Authors: | LAN Cong-hua CHEN Xiao-yun |
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| Affiliation: | LAN Cong-hua1,CHEN Xiao-yun2(1.Department of Electronic Information Engineering,Lanzhou Polytechnical College,Lanzhou 730050,China,2.School of Information Science , Engineering,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | The problem of calculate the concise decision rules in the inconsistent tables is studied,the method of distinction matrix structure is proposed,which can be better applied to the decision table of many decision attributes exist simultaneously,with the help of distinction matrix to proceed value reduction,a new rule extraction algorithm is proposed.The attributes importance is used to describe the extent of the impact that the conditions attributes in the decision table provided by the knowledge.The rule of... |
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| Keywords: | rough set distinction matrix value reduction rule of accuracy attribute significance |
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