The Multimedia Educational Resources Database System Based on the Hierarchy Index
The understanding of the semantics of the query requirement of the user will affect the efficiency of the retrieval of the multimedia information. There is the same problem in the resources annotation of the multimedia educational resources database. The paper studies the representation of the characters of the multimedia educational resources and the relationships between the hierarchy characters of them. A hierarchy index is built based on the relationships. The high level semantics of the resources were mapping to the low level media features. This will improve the recall. The semantics annotated was extended by this mapping and the recall was improved. The subject ontology standardizes both the annotation and the query requirement. The precision will be improved also.
Hierarchy index Educational Resources Database Subject Ontology
Chunxiang Wu Shihong Chen
School of Computer, Wuhan University, Wuhan, China, 430079
国际会议
昆明
英文
2007-11-23（万方平台首次上网日期，不代表论文的发表时间）