Results 31 to 40 of about 5,614 (289)

On Topological Properties of Generalized Rough Approximation Operators [PDF]

open access: yesJisuanji kexue, 2022
Rough set theory is a mathematical tool for dealing with uncertain information.The core notions of rough set theory is approximation operators of approximation spaces.Pawlak approximation operators are established by using equivalence relations on the ...
LI Yan-yan, QIN Ke-yun
doaj   +1 more source

Attribute Reduction of Boolean Matrix in Neighborhood Rough Set Model

open access: yesInternational Journal of Computational Intelligence Systems, 2020
Neighborhood rough set is a powerful tool to deal with continuous value information systems. Graphics processing unit (GPU) computing can efficiently accelerate the calculation of the attribute reduction and approximation sets based on matrix.
Yan Gao, Changwei Lv, Zhengjiang Wu
doaj   +1 more source

Research on the Feature Selection Approach Based on IFDS and DPSO With Variable Thresholds in Complex Data Environments

open access: yesIEEE Access, 2020
Neighborhood rough model is widely used in feature selection with high dimension, fuzzy, continuous and discrete attributes, incomplete data and so on, and the application of neighborhood rough model depends on neighborhood threshold.
Yanan Hu   +4 more
doaj   +1 more source

An Ensemble Classification Method for High-Dimensional Data Using Neighborhood Rough Set

open access: yesComplexity, 2021
Mining useful knowledge from high-dimensional data is a hot research topic. Efficient and effective sample classification and feature selection are challenging tasks due to high dimensionality and small sample size of microarray data.
Jing Zhang   +3 more
doaj   +1 more source

Five Generalized Rough Approximation Spaces Produced by Maximal Rough Neighborhoods

open access: yes, 2023
In rough set theory, the multiplicity of methods of calculating neighborhood systems is very useful to calculate the measures of accuracy and roughness.
A. A. Azzam, Tareq M. Al-shami
core   +1 more source

Multi-Label Attribute Reduction Based on Variable Precision Fuzzy Neighborhood Rough Set

open access: yesIEEE Access, 2020
Multi-label attribute reduction as a common dimensionality reduction technique has obtained widely research in recent years. Most existing multi-label attribute reduction methods adopt discretization to deal with mixed data and have strict requirements ...
Panpan Chen, Menglei Lin, Jinghua Liu
doaj   +1 more source

Fundamental properties of fuzzy rough sets based on triangular norms and fuzzy implications: the properties characterized by fuzzy neighborhood and fuzzy topology

open access: yesComplex & Intelligent Systems, 2023
Fuzzy rough set models are useful tools for dealing with fuzzy and real-valued data. They have been used in many real-world applications. In this paper, we investigate the fuzzy rough set model based on triangular norms and fuzzy implications.
Zhaohao Wang
doaj   +1 more source

Simultaneous-Fault Diagnosis of Satellite Power System Based on Fuzzy Neighborhood ζ-Decision-Theoretic Rough Set

open access: yes, 2022
Due to the increasing complexity of the entire satellite system and the deteriorating orbital environment, multiple independent single faults may occur simultaneously in the satellite power system.
Chen Lu   +7 more
core   +1 more source

Six-Set Approximation Theorem of neighborhood related rough sets

open access: yesInternational Journal of Approximate Reasoning, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liwen Ma, Hui Lu
openaire   +2 more sources

Intuitionistic Fuzzy Neighborhood Rough Set Model for Feature Selection

open access: yes, 2018
Feature selection is one of the widely used pre-processing techniques to deal with large data sets. In this context, rough set theory has been successfully implemented for feature selection of discrete data set but in case of continuous data set it ...
Anoop Kumar Tiwari   +2 more
core   +1 more source

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