| 基于粗集理论的决策表知识获取方法研究 |
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| 引用本文： | 冯林,刘照鹏,黄志伟.基于粗集理论的决策表知识获取方法研究[J].计算机工程与设计,2006,27(12):2172-2174. |
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| 作者姓名： | 冯林 刘照鹏 黄志伟 |
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| 作者单位： | 1. 西南交通大学,计算机与通信工程学院,四川,成都,610031;四川师范大学,工程技术系,四川,成都,610072
2. 四川师范大学,工程技术系,四川,成都,610072 |
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| 摘 要： | 对决策表各条件分类和决策分类集合之间的关系进行了研究，提出了直接从各分类中计算决策表核及属性约简方法：依据属性约简，创建了一个多变量决策树；在此基础上，阐述了提取决策表中蕴含规则的方法，从而省去了在约简后的决策表中计算值约简步骤；通过实例，验证了这些方法的有效性。
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| 关 键 词： | 粗集 决策信息系统 核 知识约简 决策规则 |
| 文章编号： | 1000-7024（2006）12-2172-03 |
| 收稿时间： | 2005-04-30 |
| 修稿时间： | 2005-04-30 |
Research on knowledge acquisition from decision table based on rough sets theory |
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| FENG Lin,LIU Zhao-peng,HUANG Zhi-wei.Research on knowledge acquisition from decision table based on rough sets theory[J].Computer Engineering and Design,2006,27(12):2172-2174. |
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| Authors: | FENG Lin LIU Zhao-peng HUANG Zhi-wei |
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| Affiliation: | 1, School of Computer and Communication Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. Department of Engineering and Technology, Sichuan Normal University, Chengdu 610072, China |
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| Abstract: | The relationship between conditional equivalence classes and decision equivalence classes are researched in detail. From those classes, methods of core and attribute reduction are presented, According to attribute reduction, a similarity decision tree is created. On the basis of the tree, a method of acquisition decision rules is presented, and the advantage of using this method is to omit value reduction in decision table, An example illustrates the efficiency of those methods. |
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| Keywords: | rough sets decision information system core knowledge reduction decision rule |
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