Computer Engineering & Science >
Asymmetric Redundancy of Tuples in Fuzzy Relational Database
Received date: 2010-02-24
Revised date: 2010-06-08
Online published: 2011-03-25
In the real world, some objects have more general meaning than the others, the degrees of similarity of two objects may not be symmetric. The relation of similarity between two objects may neither necessarily be symmetric nor transitive, we represent it by a weak similarity relation. This paper puts forward the asymmetric redundancy of tuples in a fuzzy relational database dealing with weak fuzzy similarity relations, the concept of asymmetric redundancy of tuples is the expansion of the concept of redundancy in the fuzzy relational database. It is used to delete some redundancy information, and represent more accurate information.
YANG Ning，YANG Zhongxue，TIAN Fengchun . Asymmetric Redundancy of Tuples in Fuzzy Relational Database[J]. Computer Engineering & Science, 2011 , 33(3) : 163 -166 . DOI: 10.3969/j.issn.1007130X.2011.
［1］Buckles B P, Petry F E. A Fuzzy Representation of Data for Relational Database［J］. Fuzzy Sets and Systems,1982,7(3):213226.
［2］Zadeh L A. Similarity Relations and Fuzzy Orderings［J］. Information Science, 1970, 3(2):177200.
［3］Chen G, Vandenbulcle J, Kerre E E. A General Treatment of Data Redundancy in a Fuzzy Relational Data Model［J］. Journal of The American Society For Information Science, 1992, 43(4):304311.
［4］Intan R, Mukaidono M. Fuzzy Functional Dependency and Its Application to Approximate Querying［C］∥Proc of IDEAS’00, 2000:4754.
［5］Yan M H,Fu A. Algorithm for Discovering Multivalued Dependencies［C］∥Proc of the 2001 ACM Int’l Conf on Information and Knowledge Management,2001:556558.
［6］Wiederhold. Future Needs in Integration of Information［J］. Int’l Journal of Cooperative Systems, 2000, 9 (4):449772.
［7］何新贵. 模糊数据库系统［M］.北京：清华大学出版社,1994.
［8］李凡. 模糊信息处理系统［M］.北京：北京大学出版社,1998.
［9］王艳亮，蔡星周，孙生.模糊空值环境下关系模型的冗余处理［J］.计算机工程与科学，2006,28(2):9394.
/
| 〈 |
|
〉 |