| 不相容决策表中知识约减算法的比较分析 |
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| 引用本文： | 尹一麒,苗夺谦,王睿智,李道国.不相容决策表中知识约减算法的比较分析[J].广西师范大学学报(自然科学版),2006,24(4):42-45. |
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| 作者姓名： | 尹一麒 苗夺谦 王睿智 李道国 |
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| 作者单位： | 同济大学,计算机科学与技术系,上海,200092 |
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| 基金项目： | National Natural Science Foundation of China (60175016,60475019)，Shanxi Educational Committee(20051277) |
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| 摘 要： | 对不相容决策表分别使用3种知识约简方法(代数方法、信息熵方法和差别矩阵方法)得到的结果可能不同。在此概括这些知识约简并介绍其在分析不相容决策表中的作用。因此对于知识约简方法的选择,可以由不同决策粒度的需求决定,从而可以在相似和不确定推理的模型下生成合适的决策规则。结论对今后数据预处理的模型和算法的研究有一定作用。
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| 关 键 词： | 粗糙集 不相容决策表 知识约简 知识推理 |
| 文章编号： | 1001-6600（2006）04-0042-04 |
| 收稿时间： | 2006-05-31 |
| 修稿时间： | 2006年5月31日 |
Comparative Analysis of Knowledge Reduction Approaches in Inconsistent Decision Table |
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| YIN Yi-qi,MIAO Duo-qian,WANG Rui-zhi,LI Dao-guo.Comparative Analysis of Knowledge Reduction Approaches in Inconsistent Decision Table[J].Journal of Guangxi Normal University(Natural Science Edition),2006,24(4):42-45. |
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| Authors: | YIN Yi-qi MIAO Duo-qian WANG Rui-zhi LI Dao-guo |
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| Institution: | Department of Computer Science and Technology,Tongji University ,Shanghai 200092,China |
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| Abstract: | The results obtain by using three knowledge reduction approaches (algebra approach,information approach and discernibility-matrix-based approach) respectively may be different in inconsistent decision table.This paper is devoted to generalize those reducts and reveal those reducts' usefulness in case of analyzing inconsistent decision table.Hence,the selection of knowledge reduction approaches can be determined by the request of different levels of decision granularity so as to generate proper decision rules in the model of approximate and uncertain reasoning about knowledge.The conclusions are beneficial in further studies on models and algorithms of data preprocessing to control the degree of the conflicting for decision table. |
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| Keywords: | rough set inconsistent decision table knowledge reduction reasoning about knowledge |
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