Methodology of building a functionally sustainable in information system of an institution of higher education

The study object is the methodology of building a functionally stable information system of a higher education institution. The study subject is the process of organizing the unified information space, in which all information resources are uniquely identified, for the further implementation of an information system that meets a high level of security, productivity, scalability, management, and access to the system is provided regardless of the user's location. The purpose is to improve the quality of management and education in institutions of higher education through the introduction of modern information technologies. To achieve the goal and solve the tasks, such methods as recognition methods of information system elements and their features, methods of reconstruction of missing features of elements in the information space, methods of graph theory and game theory are used. This paper presents the developed methodology for building a functionally stable information system for a higher education institution. It consists of performing two main procedures: (1) the procedure of organizing an information system based on a single information space of a higher education institution; and (2) procedures for ensuring the functional stability of the information system of the higher education institution. The methodology of the procedure for the organization of the information system based on the unified information space of the institution of higher education is based on the model of the unified information space of the institution of higher education, methods of recognition of information system elements, reconstruction of features of information system elements and synchronous recognition of elements, algorithms of relationships between elements and their sets of feature values allows to increase the effectiveness of the information system of the institution of higher education and management decision-making. The implementation of the information system aims to optimize processes and save resources (human, financial, informational, etc.), allowing tasks to be performed remotely while ensuring a high level of system security and productivity thanks to ensuring the functional stability of the entire information system of a higher education institution.