| 粗糙集理论中决策表属性约简的信息表示 |
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| 引用本文： | 徐雪峰,吴根秀. 粗糙集理论中决策表属性约简的信息表示[J]. 江西师范大学学报(自然科学版), 2001, 25(2): 95-99 |
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| 作者姓名： | 徐雪峰 吴根秀 |
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| 作者单位： | 江西师范大学数学与信息科学学院,;江西师范大学数学与信息科学学院, |
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| 基金项目： | 江西省自然科学基金资助项目(980606) |
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| 摘 要： | 主要讨论了决策表属性约简和信息熵之间的关系,证明了对于一致决策表,其属性约简在代数表示和该文给出的信息表示下是等价的,并举例说明,对于不一致决策表,其属性的约简不能用信息熵来等价表示。
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| 关 键 词： | 粗糙集 决策表 信息熵 属性约简 |
| 文章编号： | 1000-5862(2001)02-0095-05 |
| 修稿时间： | 2000-11-23 |
An Information Representation for Attribute Reduction of Decision Tables in Rough Set Theory |
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| XU Xue feng,WU Gen xiu. An Information Representation for Attribute Reduction of Decision Tables in Rough Set Theory[J]. Journal of Jiangxi Normal University (Natural Sciences Edition), 2001, 25(2): 95-99 |
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| Authors: | XU Xue feng WU Gen xiu |
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| Abstract: | In this paper, relationships between attribute reduction of decision tables and information entropy have been mainly discussed. In a consistent decision table, the equivalence properties between algebraic representation and information representation of attribute reduction are proved. Through examples, it shows that attribute reduction of an inconsistent decision table cannot entirely be represented by information entropy. |
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| Keywords: | rough set decision tables information entropy attribute reduction |
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