Results 11 to 20 of about 6,919 (266)

On generalized topological molecular lattices [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
In this paper, we introduce the concept of the generalized topological molecular lattices as a generalization of Wang's topological molecular lattices,  topological spaces, fuzzy topological spaces, L-fuzzy topological spaces and soft topological spaces.
Narges Nazari, Ghasem Mirhosseinkhani
doaj   +1 more source

Layered Concept Lattice Model and Its Application to Build Rapidly Concept Lattice [PDF]

open access: yesComputational Intelligence and Neuroscience, 2020
When some attributes of a formal context can be decomposed into some subattributes a model of layered concept lattice to improve the efficiency of building concept lattice with complex structure attribute data is studied, the relationship between concept lattice and layered concept is discussed.
Xia Wu, Jialu Zhang, Jiaming Zhong
openaire   +2 more sources

On α-Multiplier on Almost Distributive Lattices

open access: yesJournal of Mathematics, 2021
In this paper, we initiate the concept of α-multiplier on almost distributive lattices. We prove some useful results by using the notion of α-multiplier and generalize the idea of multiplier on almost distributive lattices.
Ying Wang   +5 more
doaj   +1 more source

Gradation of Fuzzy Preconcept Lattices

open access: yesAxioms, 2021
Noticing certain limitations of concept lattices in the fuzzy context, especially in view of their practical applications, in this paper, we propose a more general approach based on what we call graded fuzzy preconcept lattices.
Alexander Šostak   +2 more
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

On Bonds for Generalized One-Sided Concept Lattices

open access: yesMathematics, 2021
The generalized one-sided concept lattices represent a generalization of the classical FCA method convenient for a hierarchical analysis of object-attribute models with different types of attributes.
Jozef Pócs, Jana Pócsová
doaj   +1 more source

Some characterizations of surjective operators on banach lattices [PDF]

open access: yesJournal of Hyperstructures, 2018
The concepts of compact and weakly compact operators on Banach spaces are considered and investigated in several papers. In this paper, taking idea from this notations, we consider the concept surjective compact and weakly compact operators on Banach ...
Akbar Bahramnezhad, Kazem Haghnejad Azar
doaj   +1 more source

A Combination Algorithm of Multiple Lattice-Valued Concept Lattices [PDF]

open access: yesInternational Journal of Computational Intelligence Systems, 2013
With the rapid development of network technology, especially in the internet area, distributed computation and parallel processing of data are urgently needed. This paper studies the combination operation of the lattice-valued concept lattices to realize
Li Yang, Yuhui Wang, Yang Xu
doaj   +1 more source

Exploring Structural Characteristics of Lattices in Real World

open access: yesComplexity, 2020
There are two important models for data analysis and knowledge system: data cube lattices and concept lattices. They both essentially have lattice structures, which are actually irregular in our real world.
Yu Chen   +5 more
doaj   +1 more source

Stream Convolution for Attribute Reduction of Concept Lattices

open access: yesMathematics, 2023
Attribute reduction is a crucial research area within concept lattices. However, the existing works are mostly limited to either increment or decrement algorithms, rather than considering both.
Jianfeng Xu   +4 more
doaj   +1 more source

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