| 属性依赖性及重要性度量 |
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| 引用本文： | 刘文军,谷云东.属性依赖性及重要性度量[J].数学的实践与认识,2009,39(7). |
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| 作者姓名： | 刘文军 谷云东 |
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| 作者单位： | 1. 长沙理工大学数学与计算科学学院,湖南,长沙,410076
2. 华北电力大学数理学院,北京,100875 |
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| 基金项目： | 国家自然科学基金，湖南省教育厅资助项目 |
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| 摘 要： | 首先分析了粗糙集理论中现在常用的属性依赖性度量中的不合理性,然后结合概率统计中的卡方分布的思想,给出一种新的属性依赖性度量,根据这种依赖性度量,给出属性重要性的定义,最后详细讨论了它们的性质.
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| 关 键 词： | 粗糙集 依赖度 重要性 |
The Degree of Dependency and Significance of Attribute |
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| LIU Wen-jun,GU Yun-dong.The Degree of Dependency and Significance of Attribute[J].Mathematics in Practice and Theory,2009,39(7). |
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| Authors: | LIU Wen-jun GU Yun-dong |
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| Abstract: | First,we analyze the unreasonableness of the measure of the dependency of attribute in rough sets.Then integrate the idea of rough sets and statistics,a new measure of degree of dependency is given.According to this degree of dependency,we give a defination of degree of attribute significance.At last,we study their properties. |
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| Keywords: | rough set dependency degree significance |
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