华中师范大学学报（自然科学版）2011，Vol.45Issue(4)：551-556,581,7.
基于本体和语义网的网络教育资源检索研究
Research on retrieval for network education resources based on ontology and semantic web
摘要
Abstract
With the promoting of educational informatization process, building network education resources is obtained increasing concern by the state and the university . The semantic web provides semantic interoperation model, it can realize the network resource discovery, sharing and the integrated application effectively. Firstly, the key technologies are summarized such as semantic web, semantic retrieval, ontology building and metadata standards etc. Then, the relationship between ontology and metadata is analyzed, and the building method of educational resources ontology based on metadata is presented. Finally, the semantic retrieval system for network education resources based on ontology is designed. The system consists of total of five major components, which includes resources storage and semantic annotation, ontology manager, retrieval preprocessor, retrieval reconstruction and retrieval engine. Storage Subsystem in which education resources are preprocessed, classified storage and management;Semantic annotation processes semantic annotation according to relevant semantic templates which are constructed task ontologies of educational resources; Ontology manager in which charge of store, access and update of the OWL format ontology; Retrieval Preprocessor processes word segmentation, part of speech tagging and standardization for forming the query vector; Retrieval Reconstruction for semantic extension of query words in the semantic query vector to reconstruct SPARQL (Simple Protocol and RDF Query Language) query; Retrieval engine responses query requirements according to SPARQL and returns search results to the user by sorting, Experiments show that ontology-based semantic retrieval improves search recall and precision for retrieving network educational resources.关键词
网络教育资源/语义检索/本体/语义网Key words
network education resources/ semantic retrieval/ ontology/ semantic web分类
信息技术与安全科学引用本文复制引用
郭广军,王剑波,游新娥,刘安丰..基于本体和语义网的网络教育资源检索研究[J].华中师范大学学报（自然科学版）,2011,45(4):551-556,581,7.基金项目
湖南省教育科学"十一五"规划重点资助课题(XJK08AXJ002) （XJK08AXJ002）
湖南省科技计划项目(2011FJ3033) （2011FJ3033）
湖南省教育厅优秀青年资助科研项目(11B104) （11B104）
娄底市科技计划项目 （）
湖南人文科技学院教学改革研究项目(RKJGY1001). （RKJGY1001）
