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An overview on the applications of the hesitant fuzzy sets in group decision-making: Theory, support
Zeshui XU, Shen ZHANG
《工程管理前沿(英文)》 2019年 第6卷 第2期 页码 163-182 doi: 10.1007/s42524-019-0017-4
关键词: hesitant fuzzy set hesitant fuzzy preference relation group decision-making
基于犹豫模糊决策矩阵的犹豫模糊多准则共识群决策方法 Article
Jie DING, Ze-shui XU, Hu-chang LIAO
《信息与电子工程前沿(英文)》 2017年 第18卷 第11期 页码 1679-1692 doi: 10.1631/FITEE.1601546
An enhanced environmental multimedia modeling system based on fuzzy-set approach: I.
Chesheng ZHAN,Rongrong ZHANG,Xiaomeng SONG,Baolin LIU
《环境科学与工程前沿(英文)》 2015年 第9卷 第3期 页码 494-505 doi: 10.1007/s11783-013-0609-x
关键词: environmental multimedia modelling fuzzy-set approach theoretical framework environmental protection
Rajarshi PRAMANIK, Dilip Kumar BAIDYA, Nirjhar DHANG
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 478-489 doi: 10.1007/s11709-021-0698-8
关键词: finite element method square footing reliability analysis fuzzy set theory coefficient of variation spatial variability
An enhanced environmental multimedia modeling system based on fuzzy-set approach: II.
Rongrong ZHANG,Chesheng ZHAN,Xiaomeng SONG,Baolin LIU
《环境科学与工程前沿(英文)》 2015年 第9卷 第6期 页码 1025-1035 doi: 10.1007/s11783-014-0655-z
关键词: environmental multimedia modelling system fuzzy-set approach application model validation uncertainty analysis
黄显明,易继锴
《中国工程科学》 2004年 第6卷 第4期 页码 44-50
提出了在模糊神经网络中使用Rough集理论进行网络结构设计的方法。由于Rough集理论有强大的数值分析能力,而模糊神经网络具有准确的逼近收敛能力和较高的精度,所以通过两者的结合,可以得到一种可理解性好、计算简单、收敛速度快的神经网络模型。这种网络构造方法的主要过程为:首先,利用Rough集理论对给定数据集进行规则获取;然后,根据这些规则构造模糊神经网络各层的神经元个数及相关参数初始值;最后,用BP算法迭代求出网络的各种参数,完成网络的设计。给出了一个二维非线性函数拟合的实例,进一步验证了方法的正确性。
郑宇杰,杨静宇,吴小俊,李勇智
《中国工程科学》 2007年 第9卷 第2期 页码 49-53
二维线性鉴别分析(2DLDA)是一种直接基于矩阵的特征提取方法,跳过传统的基于Fisher鉴别准则 的线性鉴别分析方法中必须先将二维矩阵转化成一维矢量的过程,有效地提高了特征提取速度且避免了小样本问题,其识别率优于传统的Fisherface方法。结合模糊集理论,提出了一种新的2DLDA算法——模糊2DLDA (F1DLDA)算法。首先采用FKNN算法得到相应的样本分布信息,并按其对最后得到的特征向量所作的贡献融入 到特征抽取过程中,得到有效的样本特征向量集。实验表明,F2DLDA算法的性能优于传统的2DLDA算法和Fisherface算法。
关键词: 二维线性鉴别分析 模糊二维线性鉴别分析 模糊集理论 特征提取 模糊k近邻
Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG
《机械工程前沿(英文)》 2020年 第15卷 第3期 页码 390-405 doi: 10.1007/s11465-020-0588-0
关键词: level set method topology optimization density-based method level set band
Multi-objective optimization of a hybrid distributed energy system using NSGA-II algorithm
Hongbo REN, Yinlong LU, Qiong WU, Xiu YANG, Aolin ZHOU
《能源前沿(英文)》 2018年 第12卷 第4期 页码 518-528 doi: 10.1007/s11708-018-0594-7
In this paper, a multi-objective optimization model is established for the investment plan and operation management of a hybrid distributed energy system. Considering both economic and environmental benefits, the overall annual cost and emissions of CO2 equivalents are selected as the objective functions to be minimized. In addition, relevant constraints are included to guarantee that the optimized system is reliable to satisfy the energy demands. To solve the optimization model, the non-dominated sorting generic algorithm II (NSGA-II) is employed to derive a set of non-dominated Pareto solutions. The diversity of Pareto solutions is conserved by a crowding distance operator, and the best compromised Pareto solution is determined based on the fuzzy set theory. As an illustrative example, a hotel building is selected for study to verify the effectiveness of the optimization model and the solving algorithm. The results obtained from the numerical study indicate that the NSGA-II results in more diversified Pareto solutions and the fuzzy set theory picks out a better combination of device capacities with reasonable operating strategies.
关键词: multi-objective optimization hybrid distributed energy system non-dominated sorting generic algorithm II fuzzy set theory Pareto optimal solution
Maximum independent set in planning freight railway transportation
Gainanov Damir N., Mladenovic NENAD, Rasskazova V. A.
《工程管理前沿(英文)》 2018年 第5卷 第4期 页码 499-506 doi: 10.15302/J-FEM-2018031
This work is devoted to the problem of planning of freight railway transportation. We define a special conflict graph on the basis of a set of acceptable train routes. The investigation aims to solve the classical combinatorial optimization problem in relation to the maximum independent set of vertices in undirected graphs. The level representation of the graph and its tree are introduced. With use of these constructions, the lower and upper bounds for the number of vertices in the maximum independent set are obtained.
关键词: independent set algorithm planning of transportation two-sided estimate
Operating mechanism and set pair analysis model of a sustainable water resources system
Chaoyang DU,Jingjie YU,Huaping ZHONG,Dandan WANG
《环境科学与工程前沿(英文)》 2015年 第9卷 第2期 页码 288-297 doi: 10.1007/s11783-014-0642-4
关键词: sustainable water resources system operating mechanism set pair analysis model Shanghai
XFEM schemes for level set based structural optimization
Li LI, Michael Yu WANG, Peng WEI
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 335-356 doi: 10.1007/s11465-012-0351-2
In this paper, some elegant extended finite element method (XFEM) schemes for level set method structural optimization are proposed. Firstly, two- dimension (2D) and three-dimension (3D) XFEM schemes with partition integral method are developed and numerical examples are employed to evaluate their accuracy, which indicate that an accurate analysis result can be obtained on the structural boundary. Furthermore, the methods for improving the computational accuracy and efficiency of XFEM are studied, which include the XFEM integral scheme without quadrature sub-cells and higher order element XFEM scheme. Numerical examples show that the XFEM scheme without quadrature sub-cells can yield similar accuracy of structural analysis while prominently reducing the time cost and that higher order XFEM elements can improve the computational accuracy of structural analysis in the boundary elements, but the time cost is increasing. Therefore, the balance of time cost between FE system scale and the order of element needs to be discussed. Finally, the reliability and advantages of the proposed XFEM schemes are illustrated with several 2D and 3D mean compliance minimization examples that are widely used in the recent literature of structural topology optimization. All numerical results demonstrate that the proposed XFEM is a promising structural analysis approach for structural optimization with the level set method.
关键词: structural optimization level set method extended finite element method (XFEM) computational accuracy and efficiency
Level set-based isogeometric topology optimization for maximizing fundamental eigenfrequency
Manman XU, Shuting WANG, Xianda XIE
《机械工程前沿(英文)》 2019年 第14卷 第2期 页码 222-234 doi: 10.1007/s11465-019-0534-1
关键词: topology optimization level set method isogeometric analysis eigenfrequency
《环境科学与工程前沿(英文)》 2022年 第16卷 第3期 doi: 10.1007/s11783-021-1471-x
• Hg bioaccumulation by phytoplankton varies among aquatic ecosystems.
关键词: Plankton Hg bioaccumulation Physiological characteristics A cross-system analysis Nutrient compositions Global data set
标题 作者 时间 类型 操作
An overview on the applications of the hesitant fuzzy sets in group decision-making: Theory, support
Zeshui XU, Shen ZHANG
期刊论文
An enhanced environmental multimedia modeling system based on fuzzy-set approach: I.
Chesheng ZHAN,Rongrong ZHANG,Xiaomeng SONG,Baolin LIU
期刊论文
Reliability assessment of three-dimensional bearing capacity of shallow foundation using fuzzy set theory
Rajarshi PRAMANIK, Dilip Kumar BAIDYA, Nirjhar DHANG
期刊论文
An enhanced environmental multimedia modeling system based on fuzzy-set approach: II.
Rongrong ZHANG,Chesheng ZHAN,Xiaomeng SONG,Baolin LIU
期刊论文
Level set band method: A combination of density-based and level set methods for the topology optimization
Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG
期刊论文
Multi-objective optimization of a hybrid distributed energy system using NSGA-II algorithm
Hongbo REN, Yinlong LU, Qiong WU, Xiu YANG, Aolin ZHOU
期刊论文
Maximum independent set in planning freight railway transportation
Gainanov Damir N., Mladenovic NENAD, Rasskazova V. A.
期刊论文
Operating mechanism and set pair analysis model of a sustainable water resources system
Chaoyang DU,Jingjie YU,Huaping ZHONG,Dandan WANG
期刊论文
Level set-based isogeometric topology optimization for maximizing fundamental eigenfrequency
Manman XU, Shuting WANG, Xianda XIE
期刊论文