Research on the Hierarchical Index of the Multimedia Educational Resources Database System
Both the understanding of the semantics of thequery requirement and that of the annotation of the resources wilI affect the efficiency of the information retrievaI in the multimedia educational resources database system.This paper studies the representation of the features of the multimedia educational resources and the relationships between the hierarchical features.A hierarchicaIindex is built based on the relationships to satisfy all kinds of queries to the educational resources database system.The high level semantics of the resources were mapping to the lOW level media features.The resources semantics annotated were extended by the mapping rules and the fecall was improved.The mapping rules of the hierarchical characters also provide a way to represent the semantics of the resource automatically.The SUbject ontology standardizes both the annotation and the query requirement.The precision wilI also be improved.
Hierarchy index Educational Resources Database Subject Ontology
Chunxiang Wu Shihong Chen
国际会议
The International Conference Information Computing and Automation(2007国际信息计算与自动化会议)
成都
英文
35-38
2007-12-19（万方平台首次上网日期，不代表论文的发表时间）