Key to effective video retrieval: effective cataloging and browsing
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
Analysis of online video search and sharing
Proceedings of the eighteenth conference on Hypertext and hypermedia
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The vast amounts of video that need to be tagged preclude the exclusive use of professional indexers. Thus a significant amount of video will need to be tagged by non-experts. Are the tags created by experts demonstrably superior to those of non-experts, and when non-experts have to be used for tagging, is it better to rely on tags created by those who upload videos or on others who watch the videos? Two related studies were carried out, the first where domain experts and others tagged videos, and the second where experts and others rated the relevance of tags that had been assigned to videos in the first study. Expert tags were judged to be more relevant by both experts and non-experts, with non-expert viewers also creating significantly better tags than did owners (i.e., the people who uploaded the videos). While significant differences were observed, the mean overall judged relevance of tags was relatively low, even for experts. Thus there seems to be considerable scope for the use of tag recommendation systems and other tools that can make the tagging process more consistent.