The article considers the implementation of methods for optimizing underground external engineering networks in order to reduce construction costs. For this purpose, the problem of optimizing the route of such networks is set in the form of a nonlinear programming problem. The route is modeled by a spatial polyline with rectilinear segments, and the coordinates of its vertices are considered design variables.
An intellectual functioning of the agent as a rational behavior, which is an effort to get the maximum possible benefit from its activities, is considered. For this aim an intelligent agent is searching for new alternatives (methods, algorithms, etc.), use of which gives better results comparing with the reference approach. For such a search the agent uses domain ontology within which it operates.
In the paper the evaluation of the optimization problems that arise during the automatic ontology building on its structures and content. Formed a series of such problems. The methods and algorithms for their solution.