The application and research of ontology construction technology

In the field of search, the application of ontology is an important research topic. Introduction of ontology technology in the Retrieval System with massive data can make the searching results more comprehensive. However, now days the ontology is constructed by domain experts, and there are a lot of shortcomings, such as complex process, long time for the project, and difficulty to update. Thereby, in this paper, a method of semiautomaticly building ontology is proposed, after synthetically analyzing a variety of methods and techniques about it. The building process which is based on user interests, mines not only the concepts but also the potential relationships between concepts from the texts by the method of concepts clustering. On the basis of such research, an unique Patent Information Retrieval System based on ontology has been completed.