Two Types of Generalized Variable Precision Formal Concepts

Authors:
Hong-Zhi Yang;Ming-Wen Shao
Affiliations:
Faculty of Science, Xi'an Jiaotong University, Xi'an, Shaan'xi 710049, P.R. China and Pingyuan University, Xinxiang, Henan Province 453003, P.R. China;School of Information Technology, Jiangxi University of Finance & Economics, Nanchang, Jiangxi 330013, P.R. China and Jiangxi Key Laboratory of Data and Knowledge Engineering, Jiangxi University o ...
Venue:
RSEISP '07 Proceedings of the international conference on Rough Sets and Intelligent Systems Paradigms
Year:
2007

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Abstract

In this paper, we introduce two pairs operators in fuzzy formal contexts. Based on the proposed operators, we present two types of generalized variable precision formal concepts, i.e. property oriented crisp-fuzzy concepts and object oriented fuzzy-crisp concepts. We have different level generalized formal concepts with different precision level. Last, we discuss the relationship between different precision level generalized concepts lattices in details.