Design and implementation of domain ontology-based oilfield non-metallic pipe information retrieval system

In order to solve the problems of poor retrieval performance and low retrieval quality in traditional retrieval method, a non-metallic pipe retrieval system based on ontology was designed. Firstly, the theory of ontology and information retrieval technology were introduced, and then an ontology model that can describe different information of oilfield non-metallic pipe was built. The ontology files in the type of html were described by OWL language. After that, they were saved in My SQL database based on Jena. Secondly introduced the retrieval algorithm and retrieval process of the system, realized the semantic analysis of query condition, expanded query and other functions. At last, the domain ontology-based oilfield non-metallic pipe information retrieval system was designed. Compared with the traditional retrieval method, the domain ontology-based non-metallic pipe information retrieval system can significantly improve the recall and precision rate. It has great advantage and potential in the field of intelligent information retrieval.