Meta-context mediation to attain semantic interoperability

The presented research is devoted to development of models and methods of building and integrating ontologies with the purpose of their use in the approach of context mediation for achieving semantic interoperability among sources and consumers of large-scale semantically heterogeneous databases. Within this approach interoperability is achieved by elimination of semantic conflicts that are detected through comparison of contexts of any source and consumer participating in data exchange. This comparison uses ontologies as specifications of concepts, their properties and relationships between them in a knowledge domain the source and consumer belong to. This work is concentrated on integrating ontologies of sources and consumers and building their common ontology through elimination of ontological conflicts between integrated ontologies and finding identical or synonymous fragments of these ontologies.