Results 21 to 30 of about 756 (166)
The Feature Description of Formal Context Based on the Relationships among Concept Lattices
Entropy, 2021 Three-way concept analysis (3WCA) is extended research of formal concept analysis (FCA) by combining three-way decision. The three-way object oriented concept lattice (OEOL) is one of the important data structures which integrates rough set, concept ...
Ting Qian, Yongwei Yang, Xiaoli He
doaj +1 more source
IEEE Access, 2020 Formal concept analysis (FCA) gets into good graces by increasing big data scientists due to its unique advantages. Concept similarity measurement is the key to the FCA-based application.
Fugang Wang +3 more
doaj +1 more source
Formal Concept Analysis (FCA) in socially-oriented geoinformation systems
Yugra State University Bulletin, 2016 This article describes how to use capacity of the theory of formal concept analysis (AFP) to create a mathematical model of information resource focused on people with disabilities. Describes methods of constructing formal concept grids using Galois operators in relation to data socially-oriented geographic information systems (GIS).
Sergey P Semenov +2 more
openaire +1 more source
Group Recommendation with Concept of Heuristic Construction
Jisuanji kexue yu tansuo, 2020 Formal concept analysis is a data analysis method for formal context and has been introduced into the field of recommender systems. As an effective tool for formal concept analysis, concept lattice is difficult to cope with large-scale data in e-commerce
LIU Zhonghui, ZOU Lu, YANG Mei, MIN Fan
doaj +1 more source
Lattice-Valued Topological Systems as a Framework for Lattice-Valued Formal Concept Analysis
Journal of Mathematics, 2013 Recently, Denniston, Melton, and Rodabaugh presented a new categorical outlook on a certain lattice-valued extension of Formal Concept Analysis (FCA) of Ganter and Wille; their outlook was based on the notion of lattice-valued interchange system and a ...
Sergey A. Solovyov
doaj +1 more source
Journal of Data and Information Science, 2019 Formal concept analysis (FCA) and concept lattice theory (CLT) are introduced for constructing a network of IDR topics and for evaluating their effectiveness for knowledge structure exploration.
Xu Haiyun +3 more
doaj +1 more source
Design of Role Based Access Control for Triadic Concept Analysis
Journal of Harbin University of Science and Technology, 2020 Formal concept analysis can be used to design access control hierarchy. There are investigations reported in the literature so far on the logic that transforms the three dimensional access control matrix into dyadic formal contexts. The transformation is
WANG Jing yu +2 more
doaj +1 more source
Deep First Formal Concept Search
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 +1 more source
Axioms, 2023 Preconcepts are basic units of knowledge that form the basis of formal concepts in formal concept analysis (FCA). This paper investigates the relations among different kinds of preconcepts, such as protoconcepts, meet and join-semiconcepts and formal ...
Manuel Ojeda-Hernández +2 more
doaj +1 more source
Unsupervised feature selection in binarization of real attributes for conceptual clustering [PDF]
ITM Web of ConferencesThis paper proposes an approach for processing noisy data to form homogeneous subgroups of objects based on Formal Concept Analysis (FCA). The approach involves binary encoding of heterogeneous features and unsupervised feature selection using the ...
Shkaberina Guzel +3 more
doaj +1 more source