| An improved reduction algorithm based on the degree of attribute discernibility |
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| 作者姓名： | 张铮 Yu Daoyuan Li Peigen |
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| 作者单位： | [1]Department of Mechanical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China [2]Hubei University of Technology, Wuhan 430068, P. R. China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | This paper deals with the problem of attribute discernibility reduction and proposes some new concepts to rough set theory （RST） based on the discernibility matrix of Skowron, such as secondary core, regeneration matrix and the degree of attribute discernibility （DAD）. This paper puts forward an attribute reduction algorithm based on maximum discernibility degree, which opens up an effective way of gaining minimum attribute reduction of decision table. The efficacy of this algorithm has been verified by practical application in a diagnostic system of loader, which substantially decreases information gathering requirement and lowers the overall cost with no loss of accuracy.
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| 关 键 词： | 属性约简 鲁棒集理论 RST 再生可辩矩阵 |
| 修稿时间： | 2006-05-25 |
An improved reduction algorithm based on the degree of attribute discernibility |
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| Zhang Zheng,Yu Daoyuan,Li Peigen.An improved reduction algorithm based on the degree of attribute discernibility[J].High Technology Letters,2007,13(3):244-248. |
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| Authors: | Zhang Zheng Yu Daoyuan Li Peigen |
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| Institution: | 1. Department of Mechanical Engineering,Huazhong University of Science and Technology, Wuhan 430074, P.R. China;Hubei University of Technology, Wuhan 430068, P.R. China
2. Department of Mechanical Engineering,Huazhong University of Science and Technology, Wuhan 430074, P.R. China |
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| Abstract: | This paper deals with the problem of attribute discernibility reduction and proposes some new concepts to rough set theory (RST) based on the discernibility matrix of Skowron, such as secondary core,regeneration matrix and the degree of attribute discernibility (DAD). This paper puts forward an attribute reduction algorithm based on maximum discernibility degree, which opens up an effective way of gaining minimum attribute reduction of decision table. The efficacy of this algorithm has been verified by practical application in a diagnostic system of loader, which substantially decreases information gathering requirement and lowers the overall cost with no loss of accuracy. |
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| Keywords: | attribute reduction discernibility matrix degree of attribute discernibility (DAD) secondary core regeneration discernibility matrix |
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