| 基于VPRS的信息系统近似决策规则优化 |
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| 引用本文： | 管延勇,王耘,史开泉.基于VPRS的信息系统近似决策规则优化[J].计算机工程与应用,2006,42(22):143-145. |
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| 作者姓名： | 管延勇 王耘 史开泉 |
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| 作者单位： | 济南大学理学院,济南,250022;山东大学数学与系统科学学院,济南,250100;山东大学数学与系统科学学院,济南,250100 |
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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： | 基于变精度粗糙集模型,在决策信息系统中定义近似协调等价类的一种近似约简;构造相应的区分函数,利用布尔推理理论求取近似协调等价类的近似约简,并由此获取近似决策规则的简化决策规则。利用这个方法得到的简化决策规则,与原系统中的近似决策规则是相容的。
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| 关 键 词： | 变精度粗糙集 决策规则 属性约简 区分函数 |
| 文章编号： | 1002-8331-（2006）22-0143-03 |
| 收稿时间： | 2005-12 |
| 修稿时间： | 2005-12 |
Approximate Decision Rules Optimization Based on VPRS Model in Information Systems |
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| Guan Yanyong,Wang Yun,Shi Kaiquan.Approximate Decision Rules Optimization Based on VPRS Model in Information Systems[J].Computer Engineering and Applications,2006,42(22):143-145. |
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| Authors: | Guan Yanyong Wang Yun Shi Kaiquan |
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| Abstract: | A kind of approximate reduct of approximate consistent equivalent class in decision information system is proposed based on VPRS model,a discernibility function is constructed and used to compute the approximate reduct by utilizing Boolean reasoning techniques.From all reducts of approximate consistent equivalent classes,simplified approximate decision rules compatible with original system can be derived. |
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| Keywords: | variable precision rough set decision rule attribute reduct discernibility function |
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