Sustainability of development of regional systems in transition to the economy of knowledge

The article analyzes the interrelationships of the main terms and concepts used in the investigation of the regional socio-economic system stability when changing to knowledge economy, digitalization of technological processes and management. The object of the research is complex social, ecological and economic systems of a regional scale. The subject of the research is the conceptual apparatus of the research on the stability of regional systems. Key terms and elements of the conceptual apparatus, related characteristics of regional systems that determine their composition and structure, dynamic characteristics, properties have been analyzed. The statement on the applicability of the principles of self-organization to each of the components of complex regional systems has been substantiated. Distinctive features of the regional social, ecological and economic system as a complex object, such as multicomponent, subjectivity, nonlinearity, as well as the activity of elements, subsystems and the system as a whole, have been considered. A conceptual model of development of such complex self-organizing regional socio-economic systems has been presented which determines the relationship between the concepts and the basic characteristics of systems used in behavior analysis. An approach based on the use of principles of self-organization has been proposed, which allows to present the structure of interrelationships of the basic characteristics of the development of regional systems. These principles include the principle of multivariance, the principle of freedom of choice of decisions according to D. Gabor, as well as the principle of external addition, according to which the assessment of the effectiveness of the functioning of a complex system is assessed at the non-systemic level