Towards domain ontology-based semantic annotation research

The basic concept of semantic web, ontology and the semantic annotation are described. Then the semantic annotation technology and tool are introduced and analyzed. In addition, a way of semantic annotation based on domain ontology is presented, and an example combining with petroleum products domain ontology is carried out in order to explain this way. The document's characteristic vocabulary is analyzed and the mapping between vocabulary and the ontology concept is built based on the domain ontology VSM method. By this way it can represent semantic information of document, so the semantic relationship will exist in database. The method is used in intelligent retrieval systems for semantic deducing.