Results 1 to 10 of about 368,833 (139)

Deep First Formal Concept Search [PDF]

open access: yesThe Scientific World Journal, 2014
The calculation of formal concepts is a very important part in the theory of formal concept analysis (FCA); however, within the framework of FCA, computing all formal concepts is the main challenge because of its exponential complexity and difficulty in ...
Tao Zhang   +4 more
doaj   +5 more sources

Matching biomedical ontologies based on formal concept analysis [PDF]

open access: yesJournal of Biomedical Semantics, 2018
Background The goal of ontology matching is to identify correspondences between entities from different yet overlapping ontologies so as to facilitate semantic integration, reuse and interoperability.
Mengyi Zhao   +3 more
doaj   +2 more sources

Same Effect Relation and Concept Reduction in Formal Concept Analysis [PDF]

open access: yesJisuanji kexue, 2023
Since 2018,scholars have proposed and studied a new topic of “concept reduction” in formal concept analysis.Including unnecessary concepts,core concepts,relatively necessary concepts,and the identification of three types of concepts,and research on ...
MA Wensheng, HOU Xilin
doaj   +1 more source

Research on Community Division Method Under Network Formal Context

open access: yesJisuanji kexue yu tansuo, 2021
Network community division is the basis of concept cognition and pattern learning from social networks, and is also a hot topic in the study of machine learning under the network background.
LIU Wenxing, FAN Min, LI Jinhai
doaj   +1 more source

Concepts and Categories: A Data Science Approach to Semiotics

open access: yesStudies 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
doaj   +1 more source

SFCA: A Scalable Formal Concepts Driven Architecture for Multi-Field Knowledge Graph Completion

open access: yesApplied 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
doaj   +1 more source

Formal Contexts, Formal Concept Analysis, and Galois Connections [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2013
Formal concept analysis (FCA) is built on a special type of Galois connections called polarities. We present new results in formal concept analysis and in Galois connections by presenting new Galois connection results and then applying these to formal ...
Jeffrey T. Denniston   +2 more
doaj   +1 more source

Method of Updating Formal Concept Under Covering Multi-granularity [PDF]

open access: yesJisuanji 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
doaj   +1 more source

Characterizing One-Sided Formal Concept Analysis by Multi-Adjoint Concept Lattices

open access: yesMathematics, 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
doaj   +1 more source

On inference rules in decision formal contexts [PDF]

open access: yesInternational 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
doaj   +1 more source

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