Classification of Research Problems in Grey System Theory based on Grey Space Concept

摘要

Taking into consideration a dynamic development of research concerning grey systems theory (GST), it is extremely important to determine a classification of research problems, which appear in GST, in a rational and logical way. Therefore, the purpose of the article was creating a new concept of classification of grey systems theory issues. To achieve this purpose, a category of a grey space was used, which is a basis for an axiomatic definition of a concept of greyness of information. Thus, epistemological bases of grey systems theory such as a subject, a research perspective, and a place of GST in the structure of sciences were discussed in the article. Subsequently, making use of a concept of grey space, a criterion of practical and theoretical problems' demarcation was determined. As a result, new theoretical research framework for GST was established and strengths and weaknesses of this methodology were indicated in the context of its use in social science.