Ontology Based Information Extraction -A Review

The indexing based by ontology us not in biomedicine and used to retrieve the data in an efficient manner. By using ontology based method it improves the excellence of the effect and also make simpler for the user interaction and aware of the complexity. Ontology creation is done by using many tools. The most recently used tools are Protege, OWLGrED, TopBraid and SWOOP. Ontology can be used in many of the fields such as enterprise system, health, tourism, agriculture, education, agent processing system and biomedical domain, etc. Many researchers designed ontology for their research either manually, automatic or semi-automatic way to improve the retrieval or extraction accuracy. This paper presents the overview of these three types of ontologies designed for the domains such as Agriculture, Biomedical and Health, Education and Tourism. This paper also presents the tremendous growth of ontology based research in the last five years and reviewed the most cited research papers which really pave the way to the budding researchers for capturing the knowledge in ontology.