Abstract:
An approach to the ontological description of any subject domain based on application of concepts of three types is offered: "Objects", "Properties" and "Actions". Thus, it is proposed to partially arrange various aspects of representations used for the description of knowledge by approximation property in functional layers, segments and areas. This makes possible to model semantic features of context-dependent knowledge of subject domains, to consider their changes and specifications at generation of decisions. Moreover, this opens the possibilities of predicting intentions and preventing realization of cyber threats to critical information infrastructure.