Results 21 to 30 of about 5,429,485 (293)

Some New Covering-Based Multigranulation Fuzzy Rough Sets and Corresponding Application in Multicriteria Decision Making

open access: yesJournal of Mathematics, 2021
Multigranulation rough set theory is an important tool to deal with the problem of multicriteria information system. The notion of fuzzy β-neighborhood has been used to construct some covering-based multigranulation fuzzy rough set (CMFRS) models through
Zaibin Chang, Lingling Mao
doaj   +1 more source

On Covering-Based Rough Intuitionistic Fuzzy Sets

open access: yesMathematics, 2022
Intuitionistic Fuzzy Sets (IFSs) and rough sets depending on covering are important theories for dealing with uncertainty and inexact problems. We think the neighborhood of an element is more realistic than any cluster in the processes of classification ...
R. Mareay   +3 more
doaj   +1 more source

Sensor data reduction with novel local neighborhood information granularity and rough set approach

open access: yesFrontiers in Physics, 2023
Data description and data reduction are important issues in sensors data acquisition and rough sets based models can be applied in sensors data acquisition. Data description by rough set theory relies on information granularity, approximation methods and
Xiaoxue Fan   +6 more
doaj   +1 more source

Transformer graded fault diagnosis based on neighborhood rough set and XGBoost [PDF]

open access: yesE3S Web of Conferences, 2021
Aiming at the uncertainty of fault type reasoning based on fault data in transformer fault diagnosis model, this paper proposed a hierarchical diagnosis model based on neighborhood rough set and XGBoost.
Guo RuYan   +3 more
doaj   +1 more source

Novel Graph Neighborhoods Emerging from Ideals

open access: yesMathematics, 2023
Rough set theory is a mathematical approach that deals with the problems of uncertainty and ambiguity in knowledge. Neighborhood systems are the most effective instruments for researching rough set theory in general.
Ayşegül Çaksu Güler   +4 more
doaj   +1 more source

Efficient Neighborhood Covering Model Based on Triangle Inequality Checkand Local Strategy [PDF]

open access: yesJisuanji kexue, 2022
Neighborhood covering model is widely used in classification tasks for its simple mechanism and ability to handle complex data.However,the neighborhood covering model has the problem of low efficiency and lack of related research work.To solve this ...
CHEN Yu-si, AI Zhi-hua, ZHANG Qing-hua
doaj   +1 more source

Novel Models of Fuzzy Rough Coverings Based on Fuzzy α-Neighborhood and its Application to Decision-Making

open access: yesIEEE Access, 2020
Recently, the concept of a fuzzy $\alpha $ - neighborhood operator with reflexivity was established and a fuzzy rough set covering based on a fuzzy $\alpha $ - neighborhood operator was defined by Zhang et al. As a generalization of Zhang et al. models,
Jue Ma   +4 more
doaj   +1 more source

A Novel Feature Selection Method With Neighborhood Rough Set and Improved Particle Swarm Optimization

open access: yesIEEE Access, 2022
Neighborhood rough set is an excellent mathematical tool to carry out feature selection on both numerical and categorical dataset. However, conventional feature selection algorithms usually use greedy heuristic search strategies, which is easy to trap in
Jindong Feng, Zengtai Gong
doaj   +1 more source

Two Different Views for Generalized Rough Sets with Applications

open access: yesMathematics, 2021
Rough set philosophy is a significant methodology in the knowledge discovery of databases. In the present paper, we suggest new sorts of rough set approximations using a multi-knowledge base; that is, a family of the finite number of general binary ...
Radwan Abu-Gdairi   +3 more
doaj   +1 more source

Study on intelligent analysis algorithm for achieving standard of polymer flooding well group [PDF]

open access: yesE3S Web of Conferences, 2022
In order to master the development effect of polymer flooding well group, it is necessary to accurately analyze the influence of different factors in the whole polymer flooding process on the development index.
Wang Hanqiang
doaj   +1 more source

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