Ontology-based Information Retrieval And Applications

This thesis is a full description on author's research subject. Firstly, the thesis introduces the research background and the structure. Internet has become the main way to get the resource and information exchange in the coming future, with the webpage are increasing explosive, users has to search the needed information in so vast information ocean, which be look like seeking a needle in ocean, this difficult problem has been resolved fitly by search engine technology, but because of no structure of web page, no order of surpassing linking, and great capacity and diversity and development change of web page, the users would be not so search for the necessary. For web page brings bigger latent energy, Berners-Lee, father of World Wide Web, has brought forward a semantic net on the convention in Y2K in XML2000 formally, the ontology are located in the arrangement of ideas description that from document to reasoning demonstration, so the ontology is the key of realizing the semantic web.This thesis has introduced the theory and, relevance technology of ontology and semantic web, guided by that theory, then structured the travel domain ontology apply the relevance. In the process of structured, adopt OWL of the ontology description language was adopted to be writing language and the protégé3.1 of construct tool.It is important to study the semantic web retrieval based on ontology, and designed a simple retrieval model of the domain of travel by Jena.The research significance of this thesis is to introduce the concept of ontology to real application, together with the retrieval, and realize a mini-system based on ontology.