| 基于优势关系的区间值粗糙集扩充模型 |
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| 引用本文： | 杨青山,王国胤,张清华,马希骜. 基于优势关系的区间值粗糙集扩充模型[J]. 山东大学学报(理学版), 2010, 45(9): 7-13 |
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| 作者姓名： | 杨青山 王国胤 张清华 马希骜 |
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| 作者单位： | 重庆邮电大学计算机科学与技术研究所,重庆,400065;重庆邮电大学计算机科学与技术研究所,重庆,400065;重庆邮电大学计算机科学与技术研究所,重庆,400065;重庆邮电大学计算机科学与技术研究所,重庆,400065 |
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| 基金项目： | 国家自然科学基金资助项目,重庆市杰出青年科学基金资助项目,重庆市自然科学基金重点项目 |
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| 摘 要： | 区间值信息系统是单值信息系统的一种扩充。首先在区间值信息系统中引入了四种优势关系,分析了四种优势关系的重要性质及相互联系,并针对四种优势关系的局限性,提出了一种新的优势关系--α-优势关系,进而定义了基于α-优势关系的扩充粗糙集模型。最后,通过教师评估实例比较分析了区间值信息系统中基于优势关系的扩充粗糙集模型之间的性能。
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| 关 键 词： | 区间值信息系统 优势关系 α-优势关系 粗糙集 |
| 收稿时间： | 2010-06-13 |
The interval-valued Rough set extended model based on dominance relation |
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| YANG Qing-shan,WANG Guo-yin,ZHANG Qing-hua,MA Xi-ao. The interval-valued Rough set extended model based on dominance relation[J]. Journal of Shandong University, 2010, 45(9): 7-13 |
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| Authors: | YANG Qing-shan WANG Guo-yin ZHANG Qing-hua MA Xi-ao |
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| Affiliation: | Institute of Computer Science ＆ Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065 |
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| Abstract: | The interval-valued information system is generalized model of single-valued information system. Four dominance relations are introduced to interval valued information system, and some important properties and relationships among four dominance relations are analyzed. Furthermore, based on limitations of four dominance relations, a novel dominance relation——α-dominance relation is proposed. And then, an extended Rough set model based on α-dominance relation is defined. Finally, through a teacher evaluation issue, performances of these extended rough set models based on dominance relation are also compared.
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| Keywords: | interval-valued information system dominance relation α-dominance relation Rough set |
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