Results 11 to 20 of about 39,743 (266)
Horn representation of a concept lattice [PDF]
International Journal of General Systems, 2009 Concept lattices are the central notion of formal concept analysis. They are applied in many different areas such as data mining, knowledge representation or ontology engineering and are subject to ongoing research. In order to better understand the nature of concept lattices, it is useful to consider their links to other mathematical notions.
Kamel Ben-Khalifa, Susanne Motameny
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IEEE Access, 2021 The mine safety performance evaluation and its law were taken as research objects; the human factor, mechanical equipment, management system, environment and technology were taken as mine safety state indexes; accident loss and disabling incident ...
Jianhong Chen +4 more
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Using Fuzzy Concept Lattice for Intelligent Disease Diagnosis
IEEE Access, 2017 This paper proposes a novel intelligent disease diagnosis method based on fuzzy concept lattice. Symptoms and the corresponding extents (e.g., frequency, severity, and duration) of each disease can be extracted to form a fuzzy concept lattice.
Caifeng Zou, Huifang Deng
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International Journal of Approximate Reasoning, 2013 This paper is concerned with the relationship between contexts, closure spaces, and complete lattices. It is shown that, for a unital quantale L, both formal concept lattices and property oriented concept lattices are functorial from the category L-Ctx of L-contexts and infomorphisms to the category L-Sup of complete L-lattices and suprema-preserving ...
Lili Shen, Dexue Zhang
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Concept Lattice Method for Spatial Association Discovery in the Urban Service Industry
ISPRS International Journal of Geo-Information, 2020 A relative lag in research methods, technical means and research paradigms has restricted the rapid development of geography and urban computing. Hence, there is a certain gap between urban data and industry applications.
Weihua Liao, Zhiheng Zhang, Weiguo Jiang
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IEEE Access, 2019 In the formal concept analysis (FCA), a concept lattice represents the basic structure derived from Boolean data describing the relationships between objects and attributes. One of the basic problems of FCA is to control the structure of concept lattices
Ying Wan, Ligeng Zou
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Attribute Reduction Based on Property Pictorial Diagram
The Scientific World Journal, 2014 This paper mainly studies attribute reduction which keeps the lattice structure in formal contexts based on the property pictorial diagram. Firstly, the property pictorial diagram of a formal context is defined.
Qing Wan, Ling Wei
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Spatial Concept Query Based on Lattice-Tree
ISPRS International Journal of Geo-Information, 2022 As a basic method of spatial data operation, spatial keyword query can provide meaningful information to meet user demands by searching spatial textual datasets. How to accurately understand users’ intentions and efficiently retrieve results from spatial
Aopeng Xu +4 more
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Electronic Notes in Theoretical Computer Science, 2009 AbstractFormal concept analysis and rough set theory provide two different methods for data analysis and knowledge processing. Given a context K, one can get the concept lattice L(K) in Wille's sense and the object-oriented rough concept lattice RO-L(K) (resp., attribute-oriented RA-L(K)).
Lingyun Yang, Luoshan Xu
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Distances Between Formal Concept Analysis Structures [PDF]
Transactions on Graph Data and KnowledgeIn this paper, we study the notion of distance between the most important structures of formal concept analysis: formal contexts, concept lattices, and implication bases.
Bazin, Alexandre, Kahn, Giacomo
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