Results 231 to 240 of about 401,637 (264)

Formal Concepts in Dedekind Categories

2008
Formal concept analysis is amathematical field applied to data mining. Usually, a formal concept is defined as a pair of sets, called extents and intents, for a given formal context in binary relation. In this paper we set a relational formulation for formal concepts, and prove some basic properties of concept lattices by using relation calculus in ...
Toshikazu Ishida, Kazumasa Honda, Yasuo Kawahara   +2 more
openaire   +1 more source

Basic Level of Concepts in Formal Concept Analysis

2012
The paper presents a preliminary study on basic level of concepts in the framework of formal concept analysis (FCA). The basic level of concepts is an important phenomenon studied in the psychology of concepts. We argue that this phenomenon may be utilized in FCA for selecting important concepts.
Radim Belohlávek, Martin Trnecka
openaire   +1 more source

Formal concept analysis in intuitionistic fuzzy formal context

2010 Seventh International Conference on Fuzzy Systems and Knowledge Discovery, 2010
This paper mainly studies the formal concept analysis in an intuitionistic fuzzy formal context. The primitive notions in concept lattice theory are extended to the intuitionistic fuzzy environment. According to this view, the notion of crisp-intuitionistic fuzzy concept is proposed which originates from an defined extent operator and an intent ...
openaire   +1 more source

Ontology-based concept similarity in Formal Concept Analysis

Information Sciences, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

3-Way Concept Analysis Based on 3-Valued Formal Contexts

Cognitive Computation, 2021
Ruisi Ren, Ling Wei, Jianjun Qi
exaly  

THE LEARNABILITY OF FORMAL CONCEPTS

1990
Martin Anthony, Norman Biggs, John Shawe-Taylor   +2 more
openaire   +2 more sources

Distributed three-way formal concept analysis for large formal contexts

Journal of Parallel and Distributed Computing, 2023
Aswani Kumar Cherukuri
exaly  

Concepts of formal concept analysis

AIP Conference Proceedings, 2017
Martin Žáček, Dan Homola, Rostislav Miarka   +2 more
openaire   +1 more source

Three-way granular computing, rough sets, and formal concept analysis

International Journal of Approximate Reasoning, 2020
Yiyu Yao
exaly  

Concept reduction in formal concept analysis based on representative concept matrix

International Journal of Machine Learning and Cybernetics, 2022
Ling Wei, Jianjun Qi, Qi Jianjun
exaly