scholarly journals The Development and Application of Crop Evaluation System Based on GRA

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Ruihong Wang ◽  
Liguo Zhang ◽  
Lianjie Dong ◽  
Xiuying Lu
Keyword(s):  
Grey Relational Analysis ◽  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Relational Theory ◽  
Grey System Theory ◽  
Network Technology ◽  
Grey System ◽  
Relational Analysis ◽  
Fuji Apple ◽  
Grey Relational

Ever since it was proposed, grey system theory has attracted the attention of scientific researchers and scholars. And it also has been widely used in many fields and solved a large number of practical problems in production, life, and scientific research. With the development and popularization of computer science and network technology, this traditional mathematical model can be applied more simply and efficiently to solve practical problems. Firstly, this paper, to implement steps of grey relational analysis, has made the exclusive analysis and has made the simple introduction to grey relational analysis characteristics. Then, based on grey relational theory and ASP.NET technology, the crop evaluation system is developed. Lastly, by using Excel and the crop evaluation system, the paper carries out a comprehensive evaluation about eight features of Fuji apple, which is from nine different producing areas, respectively. The experiment results show that the crop evaluation system is effective and could greatly improve the work efficiency of the researcher and expand the application scope.

Grey Relational Analysis of Fatigue Performance of Semi-Rigid Pavement Structure

2014 ◽  
Vol 651-653 ◽  
pp. 1164-1167 ◽  
Author(s):  
Zhao Hui Sun ◽  
Jing Ma ◽  
Xue Mei Su ◽  
Guo Feng Yang ◽  
Zhan Qiang Hou
Keyword(s):  
Grey Relational Analysis ◽  
Fatigue Property ◽  
Grey System Theory ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Grey System ◽  
Rigid Pavement ◽  
Relational Analysis ◽  
Pavement Structure ◽  
Grey Relational

A number of different semi-rigid pavement structure models are established to perform calculation and the results are led into the calculation software nSoft to analyze and acquire the fatigue property of different semi-rigid pavement structure models. The grey relational analysis of different semi-rigid pavement structure models fatigue properties are done based on the grey system theory to gain the key influence parameter on semi-rigid pavement structure fatigue performance. The research conclusion has certain instruction function to design pavement structure with excellent anti-fatigue performance.

The proof of a new modified grey relational grade

2016 ◽  
Vol 6 (2) ◽  
pp. 180-186 ◽  
Author(s):  
Kunli Wen
Keyword(s):  
System Theory ◽  
Grey Relational Analysis ◽  
Design Methodology ◽  
Grey System Theory ◽  
Grey System ◽  
Content Type ◽  
The Past ◽  
Relational Analysis ◽  
Grey Relational Grade ◽  
Grey Relational

Purpose – Until now, many different varieties of grey relational grade methods had been proposed, and there are also many relevant publications. However, in one article published in 2007, which applied the previous grey relational grade to environmental protection fields and some results had been found. After studied it carefully, the author found that the grey relational grade in the paper was not the previous grey relational grade. According to the mathematics logic, it must first prove the proposed grey relational grade satisfies the four axioms in grey relational analysis, and then the author can say that the achieved results are reasonable and correct. The paper aims to discuss these issues. Design/methodology/approach – The paper lists the rational and regular grey relational grade that had been published in the past, and used the four axioms in grey system theory to prove the Pai’s grey relational grade that satisfy the four axioms steps by steps. Findings – Through the detail proof of the proposed grey relational grade in Pai’s paper, it indeed satisfies the four axioms in grey relational grade. Research limitations/implications – The paper had enhanced the correctness and reasonableness of that paper, and let the grey relational grade, which appear in Pai’s paper is legitimate and correct grey relational grade in grey system theory. Originality/value – The paper had identified that Pai’s grey relational grade is a rational and regular grey relational grade in grey system theory, and it proves that the results in Pai’s paper are correct and reasonable.

The most livable city selection in Turkey with the grey relational analysis

2020 ◽  
Vol 10 (4) ◽  
pp. 529-544 ◽  
Author(s):  
Erkan Kose ◽  
Danışment Vural ◽  
Gulcin Canbulut
Keyword(s):  
System Theory ◽  
Grey Relational Analysis ◽  
Complex Problem ◽  
Grey System Theory ◽  
Grey System ◽  
Content Type ◽  
Relational Analysis ◽  
Decision Points ◽  
Criteria Weights ◽  
Grey Relational

PurposeThis study has two main objectives: (1) to expand the application areas of grey system theory and (2) to select the most livable city in Turkey.Design/methodology/approachChoosing the most livable city is a complex problem that requires many criteria to be considered. It is important to select decision points according to which the criteria selection will be made and to what extent the criteria will affect the evaluation. For this purpose, a questionnaire was prepared to determine the criteria to be used in the assessment. The survey results were evaluated by the factor analysis (FA) and it was found that the criteria included in the survey were grouped under seven factors. Then, criteria weights were assigned to the determined criteria using the analytic hierarchy process (AHP). At the last stage, Turkey's six most popular cities are graded using the grey relational analysis (GRA) to reduce the uncertainty existing in the process of evaluation.FindingsThe obtained results indicated that the most livable city in Turkey is Istanbul. Istanbul is followed by Izmir, Antalya, Eskisehir, Bursa and Ankara, respectively. Considering that Istanbul is a center of attraction in many respects, this result is not a surprise for many people. It is also observed that the results obtained overlap with similar studies in the literature.Originality/valueGrey system theory and grey numbers have not been previously used to select the most livable city. With this aspect, this study has expanded the application of grey system theory and made an important contribution to the literature.

scholarly journals Stock Selection Based on Fundamental Analysis Approach by Grey Relational Analysis: A Case of Turkey

2016 ◽  
Vol 8 (7) ◽  
pp. 178 ◽  
Author(s):  
Mehmet Fatih Bayramoglu ◽  
Coskun Hamzacebi
Keyword(s):  
Grey Relational Analysis ◽  
Grey System Theory ◽  
Analysis Approach ◽  
Common Stock ◽  
Fundamental Analysis ◽  
Financial Assets ◽  
Grey System ◽  
Stock Selection ◽  
Relational Analysis ◽  
Grey Relational

Determining financial assets for investment is a significant problem for investors. Especially, since it is riskier in comparison with other financial assets, selecting common stock is not only important for investors but also, it is a complicated decision-making process, because, although they agree to accept a risk, common stock investors tend to keep the risk they undertake at a given level. With this purpose, investors prefer to conduct various analysis and predictions to decide which common stocks they will invest. In this study, by using micro and macro variables, which have been determined with a fundamental analysis approach, a common stock selection is conducted for nine different corporations doing activities in ten lines of business in Borsa Istanbul. In the study, Grey Relational Analysis (GRA), which is developed in the framework of Grey System Theory, is used as a mathematical model. Therefore, a conclusion is obtained about which parameters are more important in selecting a common stock, and the efficiency of GRA Method is tested.

An Algorithm of the Misconception Order

2013 ◽  
Vol 284-287 ◽  
pp. 3010-3014 ◽  
Author(s):  
Tian Wei Sheu ◽  
Ching Pin Tsai ◽  
Jian Wei Tzeng ◽  
Tzu Liang Chen ◽  
Masatake Nagai
Keyword(s):  
System Theory ◽  
Grey Relational Analysis ◽  
Academic Community ◽  
Grey System Theory ◽  
Remedial Instruction ◽  
Grey System ◽  
Relational Analysis ◽  
The Right ◽  
Grey Relational ◽  
Student Problem

In recent years, the grey system theory is widely applied in academic community, and it has obtained very good results. This study proposes GSP chart (Grey Student-Problem chart) which combines S-P chart (Student-Problem chart) with GRA (Grey Relational Analysis). This paper selects the students whose Gamma value is near 0.5 from the GSP chart. Those students are defined as the Misconception-Students. Then we analyze those students’ answers and select the right and wrong answers created by those Misconception Students at the different time. It is said that the misconception questions are defined as the Misconception-Problem Chart. Through the Problem-Concept Chart conducted by teachers, we can define the Misconception Rate and the Misconception Order by comparing the Misconception-Concept Chart. This method can not only accurately predict where students’ misconception is, but also apply to the remedial instruction.

scholarly journals Grey Relational Analysis (GRA) as an Effective Method of Research into Social Preferences in Urban Space Planning

Land ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 102
Author(s):  
Małgorzata Gerus-Gościewska ◽  
Dariusz Gościewski
Keyword(s):  
Urban Space ◽  
Social Preferences ◽  
Planning Process ◽  
Grey System Theory ◽  
Grey System ◽  
Space Planning ◽  
Relational Analysis ◽  
Analysis Process ◽  
Survey Results ◽  
Grey Relational

The appearance of urban space is most often determined by planners, urbanists, and officials who fail to consider social preferences in the planning process. According to recent scientific research, spatial design should take into account people’s preferences with regard to its shape, as it is they who are the target audience. Moreover, legal regulations in many countries require the public’s inclusion into the space planning process. This paper outlines the legal status of the issue of social participation in spatial planning and provides an overview of the methods and techniques applied in the research into preferences. The aim of the article is to determine the strength of the relationship between the features adopted for the study using the grey system theory and to investigate the model’s behaviour for varied input data. It also presents the results of a study into the effect of geospatial features on the perception of the sense of security within urban space. The features were extracted using a heuristic method for solving research problems (i.e., brainstorming) and the survey was conducted by the point-scoring method. The survey results were processed by the grey system method according to the grey system theory (GST) of the grey relational analysis (GRA) type to yield a sequence of the strength of dependence between the analysed features. The study was conducted five times, with the order of entering the survey results being changed. The conducted analyses indicated that a change in the order of data from particular surveys applied for calculations resulted in the order of the epsilon coefficients in the significance sequences being changed. The analysis process was modified in order to obtain a stable significance sequence irrespective of the order of entering survey results in the analysis process. The analysis results in the form of a geospatial feature significance sequence provide information as to which of them have the greatest impact on the phenomenon under consideration. The research method can be applied to solve practical problems related to social participation.

scholarly journals Personalized Product Evaluation Based on GRA-TOPSIS and Kansei Engineering

Symmetry ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 867 ◽  
Author(s):  
Huafeng Quan ◽  
Shaobo Li ◽  
Hongjing Wei ◽  
Jianjun Hu
Keyword(s):  
Game Theory ◽  
Grey Relational Analysis ◽  
Evaluation System ◽  
Product Evaluation ◽  
Entropy Method ◽  
Kansei Engineering ◽  
Topsis Method ◽  
Decision Matrix ◽  
Relational Analysis ◽  
Grey Relational

With the improvement of human living standards, users’ requirements have changed from function to emotion. Helping users pick out the most suitable product based on their subjective requirements is of great importance for enterprises. This paper proposes a Kansei engineering-based grey relational analysis and techniques for order preference by similarity to ideal solution (KE-GAR-TOPSIS) method to make a subjective user personalized ranking of alternative products. The KE-GRA-TOPSIS method integrates five methods, including Kansei Engineering (KE), analytic hierarchy process (AHP), entropy, game theory, and grey relational analysis-TOPSIS (GRA-TOPSIS). First, an evaluation system is established by KE and AHP. Second, we define a matrix variate—Kansei decision matrix (KDM)—to describe the satisfaction of user requirements. Third, the AHP is used to obtain subjective weight. Next, the entropy method is employed to obtain objective weights by taking the KDM as input. Then the two types of weights are optimized using game theory to obtain the comprehensive weights. Finally, the GRA-TOPSIS method takes the comprehensive weights and the KMD as inputs to rank alternatives. A comparison of the KE-GRA-TOPSIS, KE-TOPSIS, KE-GRA, GRA-TOPSIS, and TOPSIS is conducted to illustrate the unique merits of the KE-GRA-TOPSIS method in Kansei evaluation. Finally, taking the electric drill as an example, we describe the process of the proposed method in detail, which achieves a symmetry between the objectivity of products and subjectivity of users.

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