Use of ontologies in semantic information systems

The article describes some problems of design and implementation of informational systems. An approach towards building semantic informational systems is proposed. The problem of systems requirements evolution after it was already implemented is stated as a key problem in informational systems creation. It is proposed to include into the system a special variative part, that would specify the subject domain, methods and tasks. This part might be in a form of semantic web or ontology. Ontology interpretation might allow configuring the information system statically or dynamically. It would be possible to correct behavior, interfaces, data models or the interaction rules with related systems. Thus, semantic information systems possess new qualities and behavioral flexibility. These ideas have been implemented in practice and are well proven. Methodical approach that allows to quickly and easily develop semantic information systems based on the Repository of IT-Infrastructure Energy research is described. The Repository can be configured online to process and represent information in accordance with ontology.