Grey Evaluation Research Articles

A new method for evaluating tour online review based on grey 2-tuple linguistic

Purpose – Tour social network data that are heterogeneous contain not only the quantitative structured evaluation data, but also the qualitative non-structured data. This is a big data scenario. How to evaluate tour online review and then recommend to potential tourists quickly and accurately are important parts of social responsibility of tour companies. The purpose of this paper is to propose a new method for evaluating tour online review based on grey 2-tuple linguistic. Design/methodology/approach – The phenomenon of “poor information” exists in some big data scenario. According to social responsibility, grey 2-tuple linguistic evaluation model for tour online review is proposed. Findings – Tour social networks contain data that are valuable to each individual on tourism industry's value chain. Grey 2-tuple linguistic evaluation model can be used for evaluating tour online reviews. This is a systems thinking method that takes social responsibility into account. Research limitations/implications – Due to the complex links among reviewers in social network, network mining approaches and models are expected to be added to this research in the near future. Practical implications – Grey 2-tuple linguistic evaluation method can contribute to the future research on evaluating a variety of tour social network comment data in the real world. Originality/value – A new evaluation method for making evaluation and recommendations based on tour social network comment information is proposed.

Grey evaluation empirical study based on center-point triangular whitenization weight function of Jiangsu Province industrial technology innovation strategy alliance

Purpose– This paper aims to investigate the performance of Jiangsu Province industrial technology innovation strategy alliance.Design/methodology/approach– Through a preliminary investigation of 30 Jiangsu industrial technology innovation strategic alliances, this paper analyzed the status and extracted 18 alliances to conduct an in-depth investigation. By grey evaluation method based on center-point triangular whitenization weight function, the paper classified and analyzed alliances.Findings– The results show that university or research institutions-oriented alliance perform better, but the government/enterprise-oriented alliance perform diverse, and majority is rated “general”.Originality/value– The paper succeeds in clustering analysis to Jiangsu Province industrial technology innovation strategy alliance with insufficient data. And according to the result of clustering, it analyzes the causes, which provide value information for the sustainable development of Jiangsu Province industrial technology innovation strategy alliance.

Performance evaluation of services quality in higher education institutions using modified SERVQUAL approach with grey analytic hierarchy process (G-AHP) and multilevel grey evaluation

Performance evaluation of services quality in higher education institutions using modified SERVQUAL approach with grey analytic hierarchy process (G-AHP) and multilevel grey evaluation

北京农户叶类蔬菜营销渠道绩效评价

评价北京农户的叶类蔬菜渠道绩效时，首先建立相应评价指标体系；其次通过层次分析法建立多阶层次分析模型并计算影响绩效的各因素指标权重，同时基于三角白化权函数的灰色评估方法，评估渠道各层次指标，得到相应渠道绩效的等级和综合评价值。定量评价结论是：“农户 + 企业或合作社”模式的渠道绩效最高，其次是“农户 + 产地集贸市场”和“农户 + 产地收购商”。“农户 + 批发市场”模式的渠道绩效最低，不适于农户进行叶类蔬菜的销售。Marketing channel efficiency of leafy vegetables was evaluated in this study. The impact factors of leafy vegetable marketing channel efficiency were identified, and then its corresponding evaluation index system was constructed. An evaluation model for multi-hierarchy process based on AHP was established, and the index weights of various factors were calculated. Meanwhile, on the basis of grey evaluation method of triangular whitening weight function, the indexes of various hierarchies in different channels were evaluated and the level and comprehensive evaluation value of performance of marketing channels efficiency were got. The quantitative evaluation results showed that the mode of “Farmers + enterprise (cooperatives)” achieved the highest channel efficiency and the mode of “Farmers + Wholesale” achieved the lowest channel efficiency. The mode of “Farmers + Wholesale” is unsuitable for farmers selling leafy vegetables.

Safety Assessment of Solid Rocket Motor Waterjet Clearing System Based on Grey Analytic Hierarchy Process

Basing on the complexity and uncertainty of many risk factors which were presented in the solid rocket motor waterjet clearing system, according to operating procedures of the waterjet clearing system, the analytic hierarchy process was adopted to establish its safety evaluation index system, and then the gray comprehensive evaluation was used to evaluate the solid rocket motor waterjet clearing system security. The evaluation results indicate that the solid rocket motor waterjet clearing system's comprehensive evaluation value is 3.1126 and at a higher risk situation, thus there is need to strengthen the prevention and control of the risk factors in it; the comprehensive evaluation value of the waterjet clearing platform is 3.2417, which is higher than the overall comprehensive evaluation value, therefore it should be paid attention to in risk prevention and control; the evaluation result is in good agreement with the actual situation.

The Risk Assessment of High-Tech Project Based on Comprehensive Evaluation of Fuzzy and Gray Model

High-tech projects have high risks involving wide range of links, high expense of investment, long period of development and production cycle, complicated operation system, etc. When evaluating the project's risk, a separate gray method or fuzzy theory model is not comprehensive, it should combine the gray method with the fuzzy evaluation model. From the fuzzy evaluation and gray evaluation method the gray clustering statistic could be obtained by use of grey cluster theory. It is necessary to construct fuzzy membership matrix of risk and establish a fuzzy and gray comprehensive evaluation method, and adequately adopt expert's evaluation information of the fuzziness and grayness. Finally, using concrete empirical analysis in aviation armament project risk assessment, the feasibility and the correctness of the model are verified.

Evaluation on Core Competitiveness of Construction Enterprise Based on Multi-Level Gray Evaluation Method

The core competitive index system is proposed from construction enterprises characteristics. Due to fuzzy characteristics of core competitive index, a multi-level gray evaluation model is established for construction enterprises. And the effectiveness of this model is illustrated by an example.

Research on the Grey Correlation Evaluation Model of Equipment Utilization Quality Based on TOPSIS

The basic theories of TOPSIS and grey correlation are studied firstly. Aiming at the quality evaluation of equipment in use-phase, the comprehensive evaluation model combined TOPSIS and grey correlation theory is built. On this basis the model is verified by the related equipment quality data of three engineering units. According to the calculation results, the evaluation method is demonstrated feasible and effective.

Study on Risk Evaluation of Oil Spilling from Ship Based on the Gray Theory

At present, with the continuous increase of the nautical navigation density and the number of large size & specialization of the dangerous cargo vessels, the potential risk of oil spill accident from ships has been growing. On this background, this paper analyses three major factors affecting the risk assessment of ship oil spilling; then uses the gray theory to establish multi-level gray evaluation model and calculates the gray evaluation coefficient, weight vector and weight matrix; at last, the paper gives a comprehensive evaluation and makes example verification according to the calculation result. The result shows that this model has the characteristics of simple in calculation, clear in level and credible in the result.

Reliability Evaluation of Thermal Power Units Operation Based on Grey Fuzzy Theory

The thermal power units operational reliability is the fundamental guarantee of smooth operation of electricity system. According to the problem of thermal power units operational reliability evaluation, a comprehensive evaluation method is put forward based on grey fuzzy theory. Firstly, this paper establishes an evaluation index system by the analysis of factors affecting the reliability of thermal power units. And then a reliability evaluation model of thermal power units operation is built based on grey fuzzy comprehensive evaluation which combined with the grey cluster theory and the fuzzy algorithm. At last, the numerical example is shown to verify the feasibility of the grey fuzzy comprehensive evaluation method.

Evaluation of Slope Stability Based on Fuzzy Grey Element-Matter Model Based on Properties of Mechanics

In view of the gray numbers in fuzzy matter-element values, in this paper matter element analysis which can consider the incompatibility between the various factors will be combined with gray system theory. Thus a fuzzy gray element evaluation model was established for the stability of rock slope, and the stability of Bu-zhao-ba open pit west slope was evaluated by this model. In this model the composite gray matter-element was established by five slope stability grades, six factors and its corresponding gray value by correlation transformation. This model can solve the above contradictions efficiently, and the result of the comprehensive analysis in the west slope of Bu-zhao-ba open pit by this model was same as the reality basically.

Effect Evaluation of Experiment Teaching Based on Grey Evaluation Method

That the basic education reform conforms to the demand of teaching development as well as the professional capabilities, teaching level, and teaching effectiveness of experimental class teachers are supposed to be improved has become the important objectives of developing and optimizing the experimental teaching reform. This paper firstly analyzed the present situation of experiment teaching effect evaluation , and then analyzed the advantages of gray evaluation method in the experiment teaching effect evaluation compared with the traditional experiment teaching effect evaluation. Thus this paper built the optimized experiment teaching effect optimization system by further applying the gray evaluation method to analyze and evaluate the experiment teaching effect and then optimize teaching evaluation process, and finally improve work efficiency and evaluation accuracy .

Study on Grey Comprehensive Evaluation Based on the APH of the Site Selection of China Inland Nuclear Power Station

The site selection of China inland nuclear power station is key issue in its early preparations, and there are many issues which affect it. However, now the study of the site selection of inland nuclear power station limits to the discussion on its influence factors, and the lack of scientific evaluation method to evaluate the reasonableness of the site selection. This article firstly uses analytical hierarchy process to establish index system for inland nuclear station location; secondly establishes the evaluation model based on the grey comprehensive evaluation method; and finally applies the model to one location of a nuclear power station for instance, which confirm the feasibility of the model. The grey comprehensive evaluation of this article can provide scientific and effective evaluation method for the site selection of inland nuclear power station.

Study on Optimal Selection for Soft Soil Foundation Treatment Methods of Port Engineering

In this paper, advantages and disadvantages of single evaluation methods in solution selection of soft soil foundation treatment are analyzed and evaluated. Grey multilevel evaluation model combined AHP method and GRAP method is used in method selection of soft soil foundation treatment. Three kinds of soft soil foundation treatment schemes to be adopted in breakwater engineering construction in the west area of Yantai port are analyzed. And optimal selection of soft foundation treatment schemes is realized. It indicates that grey multilevel evaluation methods is reliable in results and possesses certain practical applicability and effectiveness, which provides a new way for optimal selection for soft soil foundation treatment methods of port engineering.

Grey Incidence Cluster Analysis of Colliery Security Management Evaluating Indicator

It is necessary to exactly classify the evaluating indicator of colliery security management, and the classification is also the foundation and prerequisite of colliery security management and evaluation. In this paper, reasonable classification to colliery security management and evaluation is carried by the method of grey incidence cluster. Grey incidence cluster is one kind of grey cluster evaluation in grey system theory. On the basis of lots of investigation, analysis and summary, sample nine coal mines, 13 safety management evaluation，calculate their gray absolute degree, taken given threshold r=0.75，classify these indicators appropriately to simplify the evaluation and examination indicator. Evaluating indicator cluster method is simple and convenient and has the character of strong applicability.

Grey Evaluation Model Based on Reformative Triangular Whitenization Weight Function and Its Application in Water Rights Allocation System

In the actual analysis of grey clustering evaluation, the length of a grey clustering interval was partially longer, which is determined by the grey clustering evaluation method based on the center-point triangular whitenization weight function. In response to problems like this, this paper proposes a new grey evaluation method on the basis of the reformative triangular whitenization weight function. Motivated by ideas of the end-point and the center-point triangular whitenization weight functions, we construct a new compact-center-point triangular whitenization weight function. Then, several aspects of the three kinds of triangular whitenization weight functions are compared, such as the crossing properties of grey cluster, clustering coefficients, rules for grey clustering interval, rules for choosing end-points and clustering performance. In the following, this paper proposes an example about the evaluation of a basin initial water rights allocation scheme, which analyzes the three methods to further verify that the new grey clustering evaluation method is feasible and effective. The results indicate that the compact-center-point triangular whitenization weight function precedes the end-point triangular whitenization weight function and the center-point triangular whitenization weight function soundly.

Research on Handling the Conflict of Project Resource Based on Multi-Level Grey Comprehensive Evaluation Method

Research on frequent resource conflict in project-driven enterprises to establish the evaluation index system by integrating multiple evaluation rules of project activities, and evaluate two or more activities or tasks in the resource conflict by the multi-level grey comprehensive evaluation method, in which the one that has the highest evaluation value will be given priority to use the resource. The use of specific examples shows that it is practicable to tackle with the resource conflict of the enterprise.

Study of Road Network Traffic Condition Based on Grey Comprehensive Evaluation Model

To compare and analyze the traffic operation status of each section and intersection in the test road network, the paper applies a combination of the analytic hierarchy process (AHP) and grey comprehensive evaluation model. Firstly obtained the evaluation indexes grey correlation matrix of contrast section (intersection) and the reference sequence according to the grey system theory, then used AHP to determine the weight of each index, finally a conclusion is carried out based on the sort of the results of comprehensive evaluation vector, which is the plunge and exit point are the worst traffic situation intersections, the section which connects the two intersections is the worst traffic condition section in the road network.

Refined Oil Repository Safety Assessment Studies

The purpose of this study is how to evaluate the security problem of refined oil repository. This paper uses gray comprehensive evaluation method to structure mathematic model. At last simulation results show that the method is certain referential significance for the refined oil repository safety assessment.

Military Logistics Center by Comprehensive Evaluation Method

The logistics center with the distribution of goods, temporary storage, picking, classification, distribution processing, storage, procurement and product design and development, and many other features. Army accoutrements homemade and purchased ways, scheduled for the army logistical reach, such as the quality of service, it is necessary to establish an integrated logistics center, and the establishment of the position of the military logistics center is the optimization of the key factors of the logistics system one. Set of index system according to the scholars of this study, the use of grey comprehensive evaluation method to construct an appropriate choice of the logistics center position mode, in order to assess the establishment of the position of the best solution. Finally, an example that the model can provide decision makers an objective analysis method.