Challenges of Ontology evaluation process

Ontologies are a pillar of the emerging Semantic Web. They capture background knowledge by providing relevant terms and the formal relations between them, so that they can be used in a machine-processable way, and thus enable automatic aggregation and the proactive use and reuse of distributed data sources. Ontologies on the Semantic Web will come from a vast variety of different sources, spanning institutions and persons aiming for different goals and quality criteria.