计算机应用 ›› 2011, Vol. 31 ›› Issue (12): 3240-3242.

• 数据库技术 • 上一篇    下一篇

优势关系下的集值序值信息系统

林耀进1,李进金2,林梦雷1   

  1. 1. 漳州师范学院 计算机科学与工程系, 福建 漳州 363000
    2. 漳州师范学院 数学与信息科学系,福建 漳州 363000
  • 收稿日期:2011-06-10 修回日期:2011-08-18 发布日期:2011-12-12 出版日期:2011-12-01
  • 通讯作者: 林耀进
  • 基金资助:
    国家自然科学基金资助项目;福建省教育厅A类重点项目;漳州师范学院科学研究资助项目

Set-valued ordered information systems under dominance relation

LIN Yao-jin1,LI Jin-jin2,LIN Meng-lei1   

  1. 1. Department of Computer Science and Engineering, Zhangzhou Normal University, Zhangzhou Fujian 363000, China
    2. Department of Mathematics and Information Science, Zhangzhou Normal University, Zhangzhou Fujian 363000, China
  • Received:2011-06-10 Revised:2011-08-18 Online:2011-12-12 Published:2011-12-01
  • Contact: LIN Yao-jin

摘要: 集值序值信息系统分为合取/析取集值序值信息系统,分别深入分析了合取/析取集值序值信息系统已有优势关系的局限性,并对其不合理情形进行了讨论,进而提出了对对象进行更好划分的新优势关系。在此基础上,分别构建了优势关系下的合取/析取集值序值信息系统的粗集模型,并通过典型例子验证了该方法的有效性。

关键词: 粗糙集, 集值序值信息系统, 优势关系, 知识约简

Abstract: Set-valued ordered information systems could be divided into conjunctive/disjunctive set-valued ordered information systems. Through analyzing the limitations of the existing dominance relations in conjunctive/disjunctive set-valued ordered information systems and discussing the unreasonable situations, new dominance relations which could classify objects better were proposed. Based on this, rough set models in conjunctive/disjunctive setvalued ordered information systems were constructed, and the validity of the proposed technique was checked with classical instances.

Key words: rough set, set-valued ordered information systems, dominance relation, knowledge reduction

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