Fuzzy sets and fuzzy logic: theory and applications
Fuzzy sets and fuzzy logic: theory and applications
Fuzzy logic: mathematical tools for approximate reasoning
Fuzzy logic: mathematical tools for approximate reasoning
Formal Concept Analysis: Mathematical Foundations
Formal Concept Analysis: Mathematical Foundations
Fuzzy Relational Systems: Foundations and Principles
Fuzzy Relational Systems: Foundations and Principles
Graded LinClosure and its role in relational data analysis
CLA'06 Proceedings of the 4th international conference on Concept lattices and their applications
Attribute implications in a fuzzy setting
ICFCA'06 Proceedings of the 4th international conference on Formal Concept Analysis
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This note describes a method for computation of non-redundant bases of attribute implications from data tables with fuzzy attributes. Attribute implications are formulas describing particular dependencies of attributes in data. A non-redundant basis is a minimal set of attribute implications such that each attribute implication which is true in a given data (semantically) follows from the basis. Our bases are uniquely given by so-called systems of pseudo-intents. We reduce the problem of computing systems of pseudo-intents to the problem of computing maximal independent sets in certain graphs. We outline theoretical foundations, the algorithm, and present demonstrating examples.