Results 11 to 20 of about 5,488,017 (310)

Using Fuzzy Concept Lattice for Intelligent Disease Diagnosis

open access: yesIEEE 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
doaj   +2 more sources

Document Co-citation Analysis using Concept Lattice

open access: yesEngineering, Technology & Applied Science Research, 2023
Document Co-citation Analysis (DCA) is a method to identify and analyze the relationships between co-cited documents. In this paper, we attempt to use concept lattice for DCA. Concept lattice is a graph structure given in Formal Concept Analysis (FCA), a
Anamika Gupta   +4 more
semanticscholar   +1 more source

Constructing three-way concept lattice based on the composite of classical lattices

open access: yesInternational Journal of Approximate Reasoning, 2020
Three-way concept analysis provides a novel model for three-way decisions, and also extends the classical formal concept analysis, which has attracted many attentions in recent years.
Sichun Yang   +3 more
semanticscholar   +1 more source

Study of Implication Representation Based on Decision Implication

open access: yesJisuanji kexue yu tansuo, 2021
Formal concept analysis can use concept lattice and (attribute) implication to visualize and represent knowledge. Decision implication is a special implication, and the study of decision implication is to establish and study one or more closed subsystems
WANG Yali, ZHAI Yanhui, ZHANG Shaoxia, JIA Nan, LI Deyu
doaj   +1 more source

Abstract Concept Lattices [PDF]

open access: yes, 2011
We present a view of abstraction based on a structure preserving reduction of the Galois connection between a language L of terms and the powerset of a set of instances O. Such a relation is materialized as an extension-intension lattice, namely a concept lattice when L is the powerset of a set P of attributes. We define and characterize an abstraction
Henry Soldano, Véronique Ventos
openaire   +1 more source

Concept Lattice Method for Spatial Association Discovery in the Urban Service Industry

open access: yesISPRS 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
doaj   +1 more source

Attribute Reduction Based on Property Pictorial Diagram

open access: yesThe 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
doaj   +1 more source

Attribute Reduction in Soft Contexts Based on Soft Sets and Its Application to Formal Contexts

open access: yesMathematics, 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
doaj   +1 more source

Spatial Concept Query Based on Lattice-Tree

open access: yesISPRS 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
doaj   +1 more source

A Novel Interval Three-Way Concept Lattice Model with Its Application in Medical Diagnosis

open access: yesMathematics, 2019
Medical diagnosis has been recognized as one of the key processes in clinical medicine, which determines diseases from some given symptoms. Nonetheless, previous works about medical diagnosis have some drawbacks because medical data are usually fuzzy ...
Junhua Hu, Dan Chen, Pei Liang
semanticscholar   +1 more source

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