Twofold fuzzy sets and rough sets—Some issues in knowledge representation
Fuzzy Sets and Systems
Rough concept analysis: a synthesis of rough sets and formal concept analysis
Fundamenta Informaticae - Special issue: rough sets
Construction of the L-fuzzy concept lattice
Fuzzy Sets and Systems
A comparative study of fuzzy sets and rough sets
Information Sciences: an International Journal
Axiomatics for fuzzy rough sets
Fuzzy Sets and Systems
Concept lattices defined from implication operators
Fuzzy Sets and Systems
Fuzzy Relational Systems: Foundations and Principles
Fuzzy Relational Systems: Foundations and Principles
A comparative study of fuzzy rough sets
Fuzzy Sets and Systems
Generalized Formal Concept Analysis
ICCS '00 Proceedings of the Linguistic on Conceptual Structures: Logical Linguistic, and Computational Issues
RSFDGrC '99 Proceedings of the 7th International Workshop on New Directions in Rough Sets, Data Mining, and Granular-Soft Computing
Information Sciences—Informatics and Computer Science: An International Journal
Modal-style operators in qualitative data analysis
ICDM '02 Proceedings of the 2002 IEEE International Conference on Data Mining
Monotone concepts for formal concept analysis
Discrete Applied Mathematics - Discrete mathematics & data mining (DM & DM)
Fuzzy inference based on fuzzy concept lattice
Fuzzy Sets and Systems
Approximation in formal concept analysis
RSFDGrC'05 Proceedings of the 10th international conference on Rough Sets, Fuzzy Sets, Data Mining, and Granular Computing - Volume Part I
Concept analysis via rough set and AFS algebra
Information Sciences: an International Journal
A new model of evaluating concept similarity
Knowledge-Based Systems
Concept Lattices in L-Rough Sets
ISNN 2009 Proceedings of the 6th International Symposium on Neural Networks: Advances in Neural Networks - Part II
Hierarchies generated for data represented by fuzzy ternary relations
ICS'09 Proceedings of the 13th WSEAS international conference on Systems
Multi-adjoint t-concept lattices
Information Sciences: an International Journal
Lattices for 3-dimensional fuzzy data generated by fuzzy Galois connections
WSEAS Transactions on Systems and Control
Axiomatic approaches of rough set approximation operators in fuzzy formal contexts
FSKD'09 Proceedings of the 6th international conference on Fuzzy systems and knowledge discovery - Volume 6
A new algebraic structure for formal concept analysis
Information Sciences: an International Journal
Journal of Intelligent Information Systems
Fuzzy Optimization and Decision Making
Closed-Label concept lattice based rule extraction approach
ICIC'11 Proceedings of the 7th international conference on Intelligent Computing: bio-inspired computing and applications
Formal concept analysis based on fuzzy granularity base for different granulations
Fuzzy Sets and Systems
On multi-adjoint concept lattices based on heterogeneous conjunctors
Fuzzy Sets and Systems
Rough set model based on formal concept analysis
Information Sciences: an International Journal
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Formal concept analysis and rough set theory are two important tools in knowledge representation and knowledge discovery in relational information systems. The purpose of this paper is to study rough set approximations within formal concept analysis in fuzzy environment. Properties of existent fuzzy concept lattices derived from an adjoint pair of operations are first reviewed and examined. Based on both lattice-theoretic and fuzzy set-theoretic operators, two new pairs of rough fuzzy set approximations within fuzzy formal contexts are then defined. Finally, properties of the rough fuzzy set approximation operators are presented in detail.