| 区间值信息系统基于极大相容类的属性约简 |
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| 引用本文： | 陈子春,秦克云.区间值信息系统基于极大相容类的属性约简[J].模糊系统与数学,2009,23(6). |
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| 作者姓名： | 陈子春 秦克云 |
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| 作者单位： | 1. 西华大学,数学与计算机学院,四川,成都,610039;西南交通大学,理学院,四川,成都,610013
2. 西南交通大学,理学院,四川,成都,610013 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 区间值信息系统是单值信息系统的一种广义模型,通过引入变精度相容关系以及极大变精度相容类,提出区间值信息系统的属性约简与对象的相对属性约简.进一步,基于区分矩阵,定义一种区分函数与相对区分函数,得到计算区间值信息系统上属性约简与相对约简的具体操作方法.
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| 关 键 词： | 区间值信息系统 极大变精度相容类 属性约简 区分函数 |
Attribute Reduction of Interval-valued Information System Based on the Maximal Tolerance Class |
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| CHEN Zi-chun,QIN Ke-yun.Attribute Reduction of Interval-valued Information System Based on the Maximal Tolerance Class[J].Fuzzy Systems and Mathematics,2009,23(6). |
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| Authors: | CHEN Zi-chun QIN Ke-yun |
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| Abstract: | Interval-valued information systems are generalized models of single-valued information systems. By introducing a variable precision tolerance relation and a kind of maximal variable precision tolerance class,this paper proposes the attribute reduction and the relative attribute reduction for its objectin interval-valued information systems. Furthmore, the paper difines a kind of discernibility function and relative discernibility function based on the discernibility matrix, and get the means of computing the attribute reduction and relative attribute reduction of interval-valued information system. |
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| Keywords: | Interval-valued Information System Maximal Variable Precision Tolerance Class Attribute Reduction Discernibility Function |
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