| 不完备信息系统中对象的相似性刻画 |
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| 引用本文： | 罗珺方,秦克云.不完备信息系统中对象的相似性刻画[J].计算机科学,2016,43(1):242-245. |
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| 作者姓名： | 罗珺方 秦克云 |
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| 作者单位： | 西南交通大学数学学院 成都610031,西南交通大学数学学院 成都610031 |
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| 基金项目： | 本文受国家自然科学基金(61473239,61175044,61372187),中央高校基础研究基金(2682014ZT28),西华大学省部级学科平台开放课题(szjj2014-052),西南交通大学研究生创新实验实践项目(YC20154010)资助 |
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| 摘 要： | 信息系统知识约简与知识发现是粗糙集理论的重要研究方向。通过对不完备信息系统中对象的相似性刻画方式以及相应的粗糙集模型进行对比分析,基于限制容差关系提出了一种新的限制相似关系,建立了基于限制相似关系的粗糙集模型,讨论了模型的基本性质及其与已有模型之间的关系。
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| 关 键 词： | 粗糙集 容差关系 限制容差关系 限制相似关系 |
| 收稿时间： | 2015/1/10 0:00:00 |
| 修稿时间： | 4/3/2015 12:00:00 AM |
Similarity of Objects in Incomplete Information Systems |
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| LUO Jun-fang and QIN Ke-yun.Similarity of Objects in Incomplete Information Systems[J].Computer Science,2016,43(1):242-245. |
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| Authors: | LUO Jun-fang and QIN Ke-yun |
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| Affiliation: | College of Mathematics,Southwest Jiaotong University,Chengdu 610031,China and College of Mathematics,Southwest Jiaotong University,Chengdu 610031,China |
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| Abstract: | The knowledge reduction and knowledge discovery in the information systems are important topics of rough set theory.Based on the analysis of existing similarity relations and related rough set models in incomplete information systems,we proposed a new kind of similarity relation,called limited similarity relation,to characterize the objects similarity in incomplete information systems.The rough set model based on the limited similarity relation was established with its basic properties and the relationships between the existing rough set models were discussed. |
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| Keywords: | Rough set Tolerance relation Limited tolerance relation Limited similarity relation |
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