Results 21 to 30 of about 5,279,386 (290)

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

Autonomous clustering using rough set theory [PDF]

open access: yes, 2008
This paper proposes a clustering technique that minimises the need for subjective human intervention and is based on elements of rough set theory. The proposed algorithm is unified in its approach to clustering and makes use of both local and global ...
Chandra Kambhampati   +3 more
core   +1 more source

An Optimization of Master S-N Curve Fitting Method Based on Improved Neighborhood Rough Set

open access: yesIEEE Access, 2021
In this paper, a novel master S-N curve fitting method based on improved neighborhood rough set is proposed. The neighborhood relationship is used to granulate the fatigue information system of aluminum alloy welded joints, and the neighborhood rough set
Li Zou   +3 more
doaj   +1 more source

Incomplete neighbourhood multi-granulation decision-theoretic rough set in the hybrid-valued decision system

open access: yesThe Journal of Engineering, 2019
It is an important subject to mine valuable knowledge from complex and massive data in the era of big data. Rough set theory is a new mathematical tool for dealing with uncertain and inaccurate data, decision-theoretic rough set model (DTRS), as an ...
Jiajun Chen   +3 more
doaj   +1 more source

Training set edition using Rough Set Theory for Semi-supervised Classification

open access: yes, 2017
Semi-supervised Classification (SSC) is becoming an attractive research filed due to the emergence of real-world problems on which the number of unlabeled examples exceeds the labeled ones.
Nápoles, G.   +4 more
core   +4 more sources

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

Rough analysis in lattices [PDF]

open access: yes, 1991
An outline of an algebraie generalization of the rough set theory is presented in the paper. It is shown that the majority of the basic concepts of this theory has an immediate algebraic generalization, and that some rough set facts are true in general ...
Iwinski, Tadeusz B.
core   +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

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