Results 1 to 10 of about 782 (249)

Feature Reduction for Power System Transient Stability Assessment Based on Neighborhood Rough Set and Discernibility Matrix

open access: yesEnergies, 2018
In machine learning-based transient stability assessment (TSA) problems, the characteristics of the selected features have a significant impact on the performance of classifiers.
Bingyang Li, Jianmei Xiao, Xihuai Wang
doaj   +4 more sources

Rule Acquisition Algorithm Based on Enriching Discernibility Matrix [PDF]

open access: yesJisuanji gongcheng, 2016
Currently,the discernibility matrix method which is based on HU is not only time-consuming but also takes up a lot of storage space,so that the efficiency of the method is not high.Some scholars use the method of pairwise comparisons between elements to ...
ZHU Jinhu,XU Zhangyan,QIAO Lijuan,XIE Xiaojun,WANG Ting
doaj   +2 more sources

Incremental Attribute Reduction Algorithm Based on Binary Discernibility Matrix [PDF]

open access: yesJisuanji gongcheng, 2017
Incremental attribute reduction algorithm is one of the important research contents in the area of dyanmic data mining.To reduce the storage space of binary discernibility matrix,and by combining the advantages of the binary discernibility matrix that it
DING Mianwei,ZHANG Tengfei,MA Fumin
doaj   +2 more sources

A Quick Algorithm for Binary Discernibility Matrix Simplification using Deterministic Finite Automata

open access: yesInformation, 2018
The binary discernibility matrix, originally introduced by Felix and Ushio, is a binary matrix representation for storing discernible attributes that can distinguish different objects in decision systems. It is an effective approach for feature selection,
Nan Zhang   +3 more
doaj   +2 more sources

Accelerated Feature Selection via Discernibility Hashing: A Rough Set Approach [PDF]

open access: yesEntropy
As a foundational analytical tool, the discernibility matrix plays a pivotal role in the systematic reduction of knowledge in rough set-based systems. Recent advancements in rough set theory have witnessed the proliferation of discernibility matrix-based
Sheng Luo   +3 more
doaj   +2 more sources

Using Covering Reduction to Identify Reducts for Object-Oriented Concept Lattices

open access: yesAxioms, 2022
An object-oriented concept lattice, as an important generalization of classic concept lattices, is a bridge between formal concept analysis and rough set theory. This paper presents an application of covering reduction in formal concept analysis.
Guilong Liu
doaj   +2 more sources

Incremental Algorithm for Attribute Reduction Based on Positive Region and Discernibility Element [PDF]

open access: yesJisuanji gongcheng, 2016
The reduction result should be updated continually with the dynamic changing of data in decision table.In order to improve the efficiency of attribute reduction while ensuring the simplest results,an improved decision table reduction algorithm is ...
LIU Taotao,MA Fumin,ZHANG Tengfei
doaj   +2 more sources

Soft discernibility matrix and attribute reduction for information systems

open access: yesTongxin xuebao, 2009
A new concept of soft discernibility matrix was proposed, and related theorems were given. By using soft discernibility matrix,attribute reductions of incomplete information systems, fuzzy value information systems and vague sets value information ...
YAN De-qin1, LI Ke-qiu2, CHI Zhong-xian2
doaj   +3 more sources

Attribute Reduction Algorithm Based on Structure Discernibility Matrix in Composite Information Systems [PDF]

open access: yesITM Web of Conferences, 2017
Attribute reduction, as an important preprocessing step for knowledge acquiring in data mining, is one of the key issues in rough set theory. It can only deal with attributes of a specific type in the information system by using a specific binary ...
Ge Mei-Jun, Fan Nian-Bai, Sun Tao
doaj   +3 more sources

Allocation Reductions in Inconsistent Decision Tables Based on Dominance Relations

open access: yesFuzzy Information and Engineering, 2015
In recent years, many methods have been proposed in order to deal with inconsistent information systems based on indiscernibility relations in rough set theory. However, a little attention has been paid to inconsistent ordered decision tables.
Wen-Sheng Du, Bao-Qing Hu
doaj   +2 more sources

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