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An Experimental Study Investigating the Retrieval Effectiveness of a Video Retrieval System Using Tag Query Expansion

태그 질의 확장 기능에 기반한 비디오 검색 시스템의 효율성에 대한 실험적 연구

  • 김현희 (명지대학교 문헌정보학과)
  • Received : 2010.09.06
  • Accepted : 2010.11.09
  • Published : 2010.11.30

Abstract

This study designed a pilot system in which queries can be expanded through a tag ontology where equivalent, synonymous, or related tags are bound together, in order to improve the retrieval effectiveness of videos. We evaluated the proposed pilot system by comparing it to a tag-based system without tag control, in terms of recall and precision rates. Our study results showed that the mean recall rate in the structured folksonomy-based system was statistically higher than that in the tag-based system. On the other hand, the mean precision rate in the structured folksonomy-based system was not statistically higher than that in the tag-based system. The result of this study can be utilized as a guide on how to effectively use tags as social metadata of digital video libraries.

Keywords

Structured Folksonomy;Relevance Judgment;Recall;Precision;Tag Gardening

Acknowledgement

Supported by : 한국학술진흥재단

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