Gray relational coefficient grc, gray relational grade grg. An overview of various system theories and its application in healthcare charissa p. Paper open access economic analysis of circulating water. Grey system is a system with partially known and partially unknown information. Issue 2 2012 selected papers from the 2011 international conference on grey systems and intelligent services ieee gsis. Grey relational analysis to determine the optimum process parameters for openend spinning yarns j. Gray man theory truths and misconceptions smart prepper gear. Systems engineering practice and theory intechopen.
Pdf predicting online auction closing price using grey. This method transforms multiple quality characteristics into single grey relational grades. Throughout the course of human evolution, humans have been solving complex problems. Introduction to grey system theory semantic scholar. A new grey system model with the fractional order accumulation is put forward and the priority of new information can be better reflected when the. Toward the end of 1960s and the start of 1970s, there appeared the theory of dissipative structures, synergics, catastrophe, and bifurcations. There are many influencing factors and they are closely related to each other, so it is appropriate and feasible to use grey system theory for evaluation. These risk factors include man dominated social structure, insecurity of woman, unequal priority level. Thus, one can say that the grey system theory is inter disciplinary, cutting across a variety of specialized fields, and it is evident that grey system theory stands the test of time since 1982. In this section, some definitions, notions and results are introduced which are useful to our further consideration of grey systems theory and to arithmetic on the grey numbers calculus as a tool.
Theory and application seeks to foster professional exchanges between scientists and practitioners who are interested in the foundations and applications of grey systems. The goal of grey system and its applications is to bridge the gap existing between social science and natu ral science. The theory of grey systems now encompasses a rich corpus including grey programming, system analysis, grey generating, grey modelling, grey prediction,grey decisionmaking, and grey control. Use of taguchi method and grey relational analysis to. As far as information is concerned, the systems which lack information, such as structure message, operation. The classic grey theory does not adequately take into account the distribution of data set and lacks the effective methods to analyze and mine big sample in multigranularity. To accomplish this, we use principles and concepts derived from systems theory. Furthermore, most of the approaches produce sample selection biases. Sexual harassment, dowry problem, torture, importation of girls, kidnapping, rape and other social problems are forced a woman to commit suicide. The whitening weight function of the grey class is established, and then the whitening value is calculated. To avoid these disadvantages, this study is the first to integrate the grey system theory with all available firm. A brief introduction to grey systems theory emerald insight. Chinese grey system association cgsa was established in 1996. The paper presents a threeparameter risk matrix that can be used for the implementation of water safety plans.
During the middle and toward the end of the 1970s, there appeared one by one such new transfield and interfiled. All the papers on developments of methodology, modeling technological. Introduction to grey system theory the journal of grey. The scientific background that grey systems theory comes into being, the astonishing progress that grey systems theory has made in the world of learning and its wideranging applications in the.
Finally, the weight of the circulating water system belongs to each grey class, and the economic performance of the cooling water system is reasonably and objectively evaluated. A conference on grey system theory and applications is held by cgsa every year. As the case stands, the developnent of the grey systemas well as theo retical topicis coupled with clear applications of the theory in assorted fields. Introduction to grey system theory research information ltd. The most often used new thinking, methods, and models of grey system theory are presented in this paper, such as algorithm rules of grey numbers based on the kernel and the degree of greyness of.
Thus, one can say that the grey system theory is interdisciplinary, cutting across a variety of specialized fields, and it is evident that grey system theory stands the test of time since 1982. Grey system theory gst poses an alternative to statistical methods for analysing spatial data. The basic framework of grey system theory initiated by professor julong deng, the founder of grey system theory, is introduced here. There have been numerous studies to design a bidding strategy that. It is one of the most widely used models of grey system theory.
On the new model system and framework of grey system. A larger value of grg indicates two systems or elements are more similar and smaller. The grey systems theory, established by julong deng in. At the end of the 1940s, there appeared systems theory, information theory, cybernetics. After several years rapid development, grey system theory has been applied in various research areas successfully.
Predicting changes in bitcoin price using grey system theory. The first one compares grey systems theory and interval analysis while. This paper analyses the characteristics of neuropsychological studies, such as the particularity of the study subjects and the specialty of the study scheme. Grey relational analysis to determine the optimum process. Main contributions to grey system theory came from. Pdf a brief introduction to grey systems theory researchgate. No fee or registration although donations are greatly appreciated. Grey system theory is also adopted to improve the performance of artificial neural network. The first one compares grey systems theory and interval analysis while revealing the fact that interval analysis is a part of grey mathematics. As far as information is con cerned, the systems which lack information, such as structure message, opera. Grey systems and control, grey relational analysis gra, and gray modeling gm. Gst provides tools that facilitate analyses of scant and imperfect information 15. Evaluating taiwans air quality variation trends using grey system theory.
However, the application of grey system theory in psychology and medicine is rare. The purpose of this paper is to introduce the elementary concepts and fundamental principles of grey systems and the main components of grey systems theory. Grey models require only a limited amount of data to estimate the behavior of unknown systems. The use of grey system theory in predicting the road. Grey system theory in research into preferences regarding. Grey theory is an essential uncertain knowledge acquisition method for small sample, poor information. Grey system theory stands the test of time since 1982. Grey theory and grey relational analysis grey system gs is the system of which part information is known and part information is unknown. For example, the human body, agriculture, economy, etc. Online auctions is a very popular method to buy and sell items on the internet. Mostly they present methodologies for separate systems engineering processes. The gra uses information from the grey system to dynamically compare each factor quantitatively. By this means, grey system theory gst is developed in which the interval grey numbers, as a typical object of gst, characterize the range of data and the grey relational and prediction models.
In early 1990s, some universities located in australia, china, japan, taiwan, usa, have started offering courses on grey system theory. Artificial neural network ann is a computing system that uses a large number of artificial neurons imitating natural neural ability to deal with an information network by computing sys tem. The gray man theory is a principal that has been adapted from the military and other professions that practice the gray man theory. Department of automation, huazhong university of science and technology. During the middle and toward the end of the 1970s, there appeared one by one such new transfield and interfiled theories of systems science as the ultracircular theory, dynamic systems, pansystems, etc. A brief introduction to grey systems theory ieee xplore. The spread of this new theory has taken place as follows. Grey system theorybased models in time series prediction. Theory and application available volumes and issues. This system offers the techniques, notions and ideas to analyze latent and intricate systems. Last but not the least, this book concludes with three appendices. The concept is also practiced by undercover agents and intelligence gatherers. However, it is very dynamic in that it is very difficult to predict the winning bid of a given auction. Ijerph free fulltext grey system theory in the study.
A study of using grey system theory and artificial neural. The conccept of the grey system, in its theory and successful application, is now well known in china. A method of gray system theory gst which measures the degree of similarity between two systems. The theory of grey systems can be used in various fields to. Grey system model with the fractional order accumulation. Practice and theory is a collection of articles written by developers and researches from all around the globe. Grey systems theory and applications sifeng liu springer. The model gm 1,1 is applied for predicting bitcoin prices in section 4 and examples and.
Introduction of grey system theory and uncertainty. This theory of personality which is now widely known as reinforcement sensitivity theoryrst has. At global grey, youll find the worlds great literature. Pdf application of grey system theory in predicting the.
The goal of grey systeni and its applications is to bridge the gap existing between social science and natural science. Grey modeling for thermal spray processing parameter analysis meimei liu, yicha zhang, wenjie dong, zexin yu, sifeng liu, samuel gomes, hanlin liao, sihao deng. Also to discuss the astonishing progress that grey systems theory has made in the world of learning and its wide. Grays reinforcement sensitivity theory rst of personality alan pickering and philip corr jeffrey grays 1976, 1982 behavioural inhibition system bis theory of anxiety has stood well the test of time. All examples presented are based on practical applications of the theory when urgent reallife problems had to be addressed. Aims to cope with the uncertainty of a system socalled grey. Essentially it is a temporary disguise designed to assist you with remaining covert in order to not make yourself a target. The grey system provides multidisciplinary approaches for analysis and abstract modelling of systems for which the information is limited, incomplete and.
The journal of grey system contributes to the advance of knowledge directly related to the fundamental theory and practical applications of grey system. The grey systems theory makes it possible to make decisions in the lack of complete information. Grey relational analysis gra, also called dengs grey incidence analysis model, was developed by a chinese professor julong deng of huazhong university of science and technology. As sirnon 1965 correctly remarked, an introduetion into a. In this paper, first, the original predicted values of road traffic. So dive in and choose among a growing library ebooks are added every day or so of free public domain epub, pdf, and kindle ebooks. This paper presents the application of grey modeling for thermal spray processing parameter analysis in. Cordon collaborative academic practice, nursingnew knowledge and innovation, university health network, toronto, on, canada. Friedman and karen neuman allen 3 b iopsychosocial assessment and the development of appropriate intervention strategies for a particular client require consideration of the individual in relation to a larger social context. As the case stands, the developnent of the grey system as well as theo retical topicis coupled with clear applications of the theory in assorted fields. Evaluating taiwans air quality variation trends using.
As far as information is concerned, the systems which lack information, such as structure message, operation mechanism and behaviour document, are referred to as grey systems. Grey system theory the analysis of reasonable investment demand of power grid enterprises is a grey system. In view of the universality of the normal distribution, the normality grey number is proposed. It was developed by julong deng 1214 to analyse contemporary systems characterised by incomplete and unreliable data. Liu the current developing status on grey system theory j. The use of grey systems theory to analyze the water supply. The journal of grey system research information ltd.
Grey system theory is utilized as a major analyzing approach. Up to now, gs theory has been developing a set of theories and techniques including grey mathematics, grey relational analysis, grey modelling, grey clustering, grey forecasting, grey decision making, grey. Pdf introduction to grey system theory semantic scholar. With the strengths on non functional series for model construction and simple calculation, grey system theory has been utilized for factor analyzing, optimization theorem, forecasting or numerical analyzing in different research fields 37,38,39,40. The scientific background that grey systems theory comes into being, the astonishing progress that grey systems theory has made in the world of learning and. Grey system theory in the study of medical tourism. It was also proposed to use the grey systems theory, which allowed for the extension of the risk matrix analysis method. This study contributes to propose an approach which effectively assesses performance of medical tourism industry based on considering the economic impact factors as well as provides a conceptual framework for the industry analysis. The perturbation theory of least squares method is applied to explain why the traditional accumulated generating operator violates the principle of new information priority of grey system theory. Research and application for grey relational analysis in.
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