Results 1 to 10 of about 401,538 (165)
Matching biomedical ontologies based on formal concept analysis [PDF]
Journal 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
Deep First Formal Concept Search [PDF]
The 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 +2 more sources
On the Calculation of Formal Concept Stability [PDF]
Journal of Applied Mathematics, 2014 The idea of stability has been used in many applications. However, computing stability is still a challenge and the best algorithms known so far have algorithmic complexity quadratic to the size of the lattice.
Hui-lai Zhi
doaj +3 more sources
Monotone concepts for formal concept analysis
Discrete Applied Mathematics, 2004 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jitender Deogun
exaly +2 more sources
Formal Contexts, Formal Concept Analysis, and Galois Connections [PDF]
Electronic 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 +4 more sources
Same Effect Relation and Concept Reduction in Formal Concept Analysis [PDF]
Jisuanji 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
Jisuanji 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
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.
openaire +3 more sources
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
doaj +1 more source
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
doaj +1 more source