Results 21 to 30 of about 449,079 (306)
On formal concepts of random formal contexts [PDF]
Information Sciences, 2021 In formal concept analysis, it is well-known that the number of formal concepts can be exponential in the worst case. To analyze the average case, we introduce a probabilistic model for random formal contexts and prove that the average number of formal concepts has a superpolynomial asymptotic lower bound.
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SFCA: A Scalable Formal Concepts Driven Architecture for Multi-Field Knowledge Graph Completion
Applied Sciences, 2023 With the proliferation of Knowledge Graphs (KGs), knowledge graph completion (KGC) has attracted much attention. Previous KGC methods focus on extracting shallow structural information from KGs or in combination with external knowledge, especially in ...
Xiaochun Sun, Chenmou Wu, Shuqun Yang
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Concepts and Categories: A Data Science Approach to Semiotics
Studies in Logic, Grammar and Rhetoric, 2022 Compared to existing classical approaches to semiotics which are dyadic (signifier/signified, F. de Saussure) and triadic (symbol/concept/object, Ch. S.
Włodarczyk André
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Characterizing One-Sided Formal Concept Analysis by Multi-Adjoint Concept Lattices
Mathematics, 2022 Managing and extracting information from databases is one of the main goals in several fields, as in Formal Concept Analysis (FCA). One-sided concept lattices and multi-adjoint concept lattices are two frameworks in FCA that have been developed in ...
María José Benítez-Caballero +2 more
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Method of Updating Formal Concept Under Covering Multi-granularity [PDF]
Jisuanji kexue, 2023 Multi-granularity formal concept analysis is an important tool for data mining and knowledge discovery.This paper studies the methods of coarsening and refining formal concepts under multi-granularity.Firstly,it is proved that the existing concept ...
WANG Taibin, LI Deyu, ZHAI Yanhui
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Formal Concepts and Residuation on Multilattices
Fundamenta Informaticae, 2023 Multilattices are generalisations of lattices introduced by Mihail Benado. He replaced the existence of unique lower (resp. upper) bound by the existence of maximal lower (resp. minimal upper) bound(s). A multilattice will be called pure if it is not a lattice. Multilattices could be endowed with a residuation, and therefore used as set of truth-values
Blaise Blériot Koguep Njionou +2 more
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On inference rules in decision formal contexts [PDF]
International Journal of Computational Intelligence Systems, 2015 Rule acquisition is one of the main purposes in the analysis of decision formal contexts. In general, the number of implications in a decision formal context is an exponential increase to the scale of the database.
Jinhai Li +3 more
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Conceptual Coverage Driven by Essential Concepts: A Formal Concept Analysis Approach
Mathematics, 2021 Formal concept analysis (FCA) is a mathematical theory that is typically used as a knowledge representation method. The approach starts with an input binary relation specifying a set of objects and attributes, finds the natural groupings (formal concepts)
Amira Mouakher +3 more
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Survey on attribute and concept reduction methods in formal concept analysis
, 2023 Formal concept analysis (FCA) is now widely recognized as a useful approach for extracting, representing, and analyzing knowledge in various domains. The high computational cost of knowledge processing and the difficulty of visualizing the lattice are ...
Kovács, László +3 more
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Attribute Reduction in Soft Contexts Based on Soft Sets and Its Application to Formal Contexts
Mathematics, 2020 We introduce the notion of the reduct of soft contexts, which is a special notion of a consistent set for soft contexts. Then, we study its properties and show that this notion is well explained by the two classes, 1 0 and 2 0 , of ...
Won Keun Min
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