Earticle

초록

영어

This paper studies notions and approaches to attribute reduction in property oriented concept lattices of formal contexts and formal decision contexts based on congruence relations. Firstly, dependence space based on the property oriented concept lattice is researched to obtain the relationship among property oriented concept lattices and the corresponding congruence relations. Then notions of attribute reduction is defined for formal contexts and decision contexts to find minimal attribute subsets which can preserve all congruence classes determined by the original attribute set, and also keep all property oriented extents and their original hierarchy in the property oriented concept lattice. Finally, approaches of discernibility matrix are presented to calculate all attribute reducts.

목차

Abstract
 1. Introduction
 2. Preliminaries
 3. Notion and Approach to Attribute Reduction in Formal Contexts
 4. Notion and Approach to Attribute Reduction in Formal Decision Contexts
 5. Conclusion
 Acknowledgements
 References

키워드

저자

• Junyu Li [ School of Mathematics, Physics and Information Science, Zhejiang Ocean University Key Laboratory of Oceanographic Big Data Mining and Application of Zhejiang Province Zhoushan, Zhejiang 316022, China ]
• Zeng Qiang [ School of Mathematics, Physics and Information Science, Zhejiang Ocean University Key Laboratory of Oceanographic Big Data Mining and Application of Zhejiang Province Zhoushan, Zhejiang 316022, China ]
• Xia Wang [ School of Mathematics, Physics and Information Science, Zhejiang Ocean University Key Laboratory of Oceanographic Big Data Mining and Application of Zhejiang Province Zhoushan, Zhejiang 316022, China ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Database Theory and Application

• 간기

  격월간

• pISSN

  2005-4270

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605