Determination of the Weights of Evaluation Indices with Combined Weighting Model for Engineering Materials

2011 ◽  
Vol 199-200 ◽  
pp. 1912-1915
Author(s):  
Tian Yun Zhang ◽  
Kui Chen
Keyword(s):  
Comprehensive Evaluation ◽  
Back Propagation ◽  
Engineering Application ◽  
Entropy Method ◽  
Analytic Hierarchy ◽  
Model Combining ◽  
Order Preference ◽  
Bearing Materials ◽  
Engineering Materials ◽  
Propagation Network

Combined Weighting Model (CWM), a new model combining entropy method, analytic hierarchy process (AHP) and back propagation network (BPN) is discussed to determine the weights(the key parameter of comprehensive evaluation) of evaluation indices(properties) for engineering materials in this paper. Taking the selection of bearing materials as an example, the combined weights of nine kinds of evaluation indices for ten kinds of candidate materials were calculated using CWM. According to these weights, candidate bearing materials were evaluated using Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). The result shows that the optimal bearing material is agreed with engineering application, which means the weights obtained from CWM are reasonable and reliable, and CWM is an effective method to determine the weights of evaluation indices for engineering materials.

scholarly journals Research on CBM of the Intelligent Substation SCADA System

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3892
Author(s):  
Jyh-Cherng Gu ◽  
Chun-Hung Liu ◽  
Kai-Ying Chou ◽  
Ming-Ta Yang
Keyword(s):  
Influencing Factors ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Fuzzy Comprehensive Evaluation ◽  
Entropy Method ◽  
Fuzzy Evaluation ◽  
Monitoring And Control ◽  
Analytic Hierarchy ◽  
Scada System ◽  
The Status

An equipment status management and maintenance platform of an intelligent substation monitoring and control system is built in the Tai-Tam substation of the Taipower company. The real-time operating status of the equipment, such as the server, supervisory control and data acquisition (SCADA) human–machine interface (HMI) software, switches, intelligent electronic devices (IEDs), merging units (MUs), as well as the entire SCADA system, are evaluated comprehensively. First, the status information of all equipment is collected, and the theory of relative deterioration degree (RDD) and fuzzy theory (FT) are applied to calculate the fuzzy evaluation matrix of the equipment influencing factors. Then, the subjective analytic hierarchy process (AHP) and the objective entropy method for weighting are combined to calculate the comprehensive weights of the equipment influencing factors. Finally, the result of the equipment status evaluation is obtained using the fuzzy comprehensive evaluation (FCE) method and is presented at the equipment status management and maintenance platform. Such equipment status evaluation results can be used by the inspection and maintenance personnel to determine the priority for equipment maintenance and repair. The result of this study may serve as a valuable reference to utility companies when making maintenance plans.

Study on Demarcation of Basic Farmland Based on GIS — A Case Study of Fogang County

2014 ◽  
Vol 1010-1012 ◽  
pp. 1312-1316
Author(s):  
Xin Xin Hou ◽  
Peng Jiao ◽  
Li Li
Keyword(s):  
Evaluation System ◽  
Entropy Method ◽  
Cultivated Land ◽  
Analytic Hierarchy ◽  
Land Protection ◽  
Technological Support ◽  
Farmland Protection ◽  
Order Preference ◽  
Regional Sustainable Development ◽  
Addition Amount

The demarcation of basic farmland scientifically is important to cultivated land protection, agriculture-economy development, and regional sustainable development. This paper took Fogang County as an example, calculated the amount of basic farmland protection and exclusion and then quantified the addition amount; established the evaluation system of farmland; used Analytic Hierarchy Process (AHP) and entropy method to determine the index weights; prioritized the selected cultivated land using GIS and Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS); and then combined with the addition amount to optimize the basic farmland spatially. The study result proved that the demarcate method of basic farmland was feasible, and can provide scientific and technological support for basic farmland planning.

Assessment on Power System Black-Start Schemes Based on Entropy-Weighted and Improved Analytic Hierarchy Process Algorithm

2014 ◽  
Vol 1070-1072 ◽  
pp. 651-656
Author(s):  
De Xian Liu ◽  
Jian Hua Zhang ◽  
Bin Cao
Keyword(s):  
Power System ◽  
Analytic Hierarchy Process ◽  
Comprehensive Evaluation ◽  
Entropy Method ◽  
Analytic Hierarchy ◽  
Evaluation Indexes ◽  
Power System Restoration ◽  
Entropy Weighted ◽  
Hierarchy Process ◽  
Improved Analytic Hierarchy Process

Reasonable black-start scheme is of great significance to power system restoration. The entropy method and improved analytic hierarchy process algorithm are applied in evaluation indexes determination. Compared to the traditional algorithm, it takes into account the objectivity of reality and the subjectivity of human experience and adjusts both relative importance by a impact factor. It dose.t need the optimization calculations. At the same time, the fuzzy consistent matrix is applied to improve the traditional analytic hierarchy process, avoiding the consistence problems. Finally, compare the pros and cons of each program by calculating the comprehensive evaluation index to achieve the program’s full sort. The calculation process is simple, the efficiency is obviously improved and the availability of the method is validated through an example.

Comprehensive Decision-Making Model for the Evaluation of Sustainable Products

2014 ◽  
Vol 644-650 ◽  
pp. 5532-5537
Author(s):  
Chang Chun Zhou ◽  
Xiu Fen Zhao ◽  
Cong Ying Deng ◽  
Li Liu ◽  
Zhi Hong Dong ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Environmental Issues ◽  
Evaluation Procedure ◽  
Topsis Method ◽  
Analytic Hierarchy ◽  
Sustainable Products ◽  
Order Preference ◽  
Decision Making Model ◽  
Hierarchy Process ◽  
The Ideal

Environmental issues have been receiving an increasing amount of attention. However, evaluating sustainable products is a challenging task. A comprehensive approach to evaluate sustainable products based on life cycle assessment strategy is proposed in this study. The evaluation procedure is based on the combination of analytic hierarchy process (AHP) and the technique for order preference by similarity to the ideal solution (TOPSIS) method. A sample evaluation for disposable coffee cups is provided to illustrate the comprehensive evaluation of sustainable products.

scholarly journals Urban Sustainability Evaluation under the Modified TOPSIS Based on Grey Relational Analysis

2019 ◽  
Vol 16 (2) ◽  
pp. 256 ◽  
Author(s):  
Juan Tang ◽  
Hong-lin Zhu ◽  
Zhi Liu ◽  
Fu Jia ◽  
Xiao-xue Zheng
Keyword(s):  
Index System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Urban Sustainability ◽  
Entropy Method ◽  
Evaluation Index System ◽  
Sustainability Evaluation ◽  
The Sustainable Development ◽  
Order Preference ◽  
Modified Topsis

The evaluation of urban sustainability plays a crucial role in the process of the sustainable development of cities. To decrease subjectivity and attain a comprehensive evaluation, this paper develops an evaluation method using the technique for order preference by similarity to ideal solution (TOPSIS). First, an evaluation index system including 39 indices and three categories (economic, social, and ecological development) is established; second, based on the index system, a modified TOPSIS, in which the entropy method is used to assign weights to each index according to its evaluation score and grey relation analysis is used to reduce the uncertainty existing in the process of evaluation, is presented to rank the sustainability level of cities. Finally, an example with the sustainability evaluation of 16 cities in the Anhui province of China is introduced to verify the effectiveness of the model.

scholarly journals A Novel Hybrid Evaluation Method for Transfer Efficiency Assessment between Rail Transit and Public Bicycles

2020 ◽  
Vol 32 (2) ◽  
pp. 279-282
Author(s):  
Dongmei Yan ◽  
Jianhua Guo ◽  
Zhao Liu ◽  
Wei Huang
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Entropy Method ◽  
Evaluation Index System ◽  
Transfer Efficiency ◽  
Rail Transit ◽  
Analytic Hierarchy ◽  
Efficiency Assessment ◽  
Em Method ◽  
Index Level

This paper proposes a new hybrid evaluation method including Improved Analytic Hierarchy Process (IAHP), Entropy Method (EM), and Grey Comprehensive Evaluation Method (GCEM) to assess the transfer efficiency between rail transit and public bicycles. In particular, the IAHP method that replaces the nine-scale approach with three-scale approach to naturally meet the consistency requirements is applied to qualitatively calculate the weights of evaluation indices, the EM method is utilized to calculate the weights of evaluation indices with relatively high degrees of quantification, and the GCEM method is used to calculate the transfer efficiency between rail transit and public bicycles. In addition, a three-level evaluation-index system including target level, criteria level and index level is established. A numerical example is also provided to verify the feasibility of the proposed hybrid evaluation method and explore the reasons for low transfer efficiency between rail transit and public bicycles.

scholarly journals Comprehensive Evaluation of Power Quality Based on an Improved TOPSIS Method Considering the Correlation between Indices

2019 ◽  
Vol 9 (17) ◽  
pp. 3603 ◽  
Author(s):  
Youhua Jiang ◽  
Mingshuo Fang ◽  
Ziqi Liu ◽  
Wenji Wang
Keyword(s):  
Power Quality ◽  
Mahalanobis Distance ◽  
Comprehensive Evaluation ◽  
Topsis Method ◽  
Entropy Weight ◽  
Analytic Hierarchy ◽  
Order Preference ◽  
Improved Technique ◽  
Evaluation Matrix ◽  
Hierarchy Process

In order to improve the scientific and rationality of power quality (PQ) comprehensive evaluation, an improved Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) strategy in consideration of the correlation between indices is proposed to evaluate PQ. The strategy overcomes the shortcomings of the traditional methods that ignore the correlation between PQ performance parameters. Firstly, the AHP-entropy weight (EW) method is obtained by combining the improved analytic hierarchy process (AHP) and the EW method, and the combined weights of the PQ indices are calculated. Secondly, the Mahalanobis distance is used to replace the Euclidean distance in the traditional TOPSIS method, and the PQ samples that need to be evaluated are sorted. The Mahalanobis distance nonlinearly correlates the components inside the evaluation matrix through its own covariance matrix, which solves the problem that the dimensions of each index are not uniform and eliminates the correlation interference between the indices. The example shows that the improved TOPSIS method effectively avoids the misjudgment caused by the correlation between the indices, and the evaluation results are more reasonable and scientific, with greater superiority and effectiveness.

scholarly journals Aircraft Combat Survivability Calculation Based on Combination Weighting and Multiattribute Intelligent Grey Target Decision Model

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Lintong Jia ◽  
Zhongxiang Tong ◽  
Chaozhe Wang ◽  
Shenbo Li
Keyword(s):  
Decision Model ◽  
Engineering Application ◽  
Vulnerability Index ◽  
Entropy Method ◽  
Evaluation Index System ◽  
Practical Case ◽  
Analytic Hierarchy ◽  
Weighting Method ◽  
Integrated Method ◽  
Rational Calculation

Aircraft combat survivability is defined as the capability of an aircraft to avoid or withstand a man-made hostile environment, which has been increasingly important. In order to give a rational calculation of aircraft combat survivability, an integrated method based on combination weighting and multiattribute intelligent grey target decision model is proposed. Firstly, an evaluation index system containing susceptibility index and vulnerability index as well as their subindexes is established. Then a multiattribute intelligent grey target decision model is introduced. A combination weighting method is brought up based on a modified AHP (analytic hierarchy process) method and the entropy method, offering a rational weight for various indexes. Finally, utilize the multiattribute intelligent grey target decision model to assess the aircraft combat survivability of aircraft, verified by a practical case of five aircraft. The results show that the proposed method is effective and has a great value in engineering application, which will provide useful references for other projects’ evaluation.

scholarly journals A Comprehensive Evaluation of the Community Environment Adaptability for Elderly People Based on the Improved TOPSIS

Information ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 389 ◽  
Author(s):  
Shen-Cheng Zhang ◽  
Hui Wang ◽  
Zhi Liu ◽  
Shouzhen Zeng ◽  
Yun Jin ◽  
...  
Keyword(s):  
Elderly People ◽  
Comprehensive Evaluation ◽  
The Elderly ◽  
Analytic Hierarchy ◽  
Community Environment ◽  
Data Space ◽  
Home Based ◽  
Order Preference ◽  
Environmental Adaptability ◽  
Hierarchy Process

As the main way of providing care for elderly people, home-based old-age care puts forward higher requirements for the environmental adaptability of the community. Five communities in Wuhu were selected for a comprehensive assessment of environmental suitability. In order to ensure a comprehensive and accurate assessment of the environmental adaptability of the community, we used the analytic hierarchy process (AHP) to calculate the weight of each indicator and the technique for order preference by similarity to ideal solution (TOPSIS) method to evaluate the adaptability of community, as well as further analyses using a two-dimensional data space map. The results show that the Weixing community is the most suitable for the elderly and outdoor activities of the community.

The Calculating Method and Application of Weight of Evaluation of Workshop Process Layout

2014 ◽  
Vol 543-547 ◽  
pp. 4408-4411
Author(s):  
Qiang Cheng ◽  
Tian Min Guan ◽  
Li Sun ◽  
Feng Bin Jing
Keyword(s):  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Weight Coefficient ◽  
Indicator System ◽  
Entropy Method ◽  
Analytic Hierarchy ◽  
Calculating Method ◽  
Real Value ◽  
Hierarchy Process ◽  
The Evaluation System

Weight is a real value reflecting the relative importance of the evaluation object in the comprehensive evaluation. After determining the indicator system, the weight of the indicator must be divided, in order to reflect the role, status and importance of the various indicators in the evaluation system of workshop process layout, which is to determine the weight coefficient of every indicator. In this paper, using group analytic hierarchy process (GAHP) and entropy method to determine the weight of the indicator of the evaluation system of workshop process layout.

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