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Exploring multimedia in a keyword space
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International Multimedia Conference archive
Proceeding of the 16th ACM international conference on Multimedia table of contents
Vancouver, British Columbia, Canada
SESSION: Content track C3: image annotation and tagging table of contents
Pages 101-110  
Year of Publication: 2008
ISBN:978-1-60558-303-7
Authors
João Magalhães  Imperial College London, London, United Kingdom
Fabio Ciravegna  The University of Sheffield, Sheffield, United Kingdom
Stefan Rüger  The Open University, Milton Keynes, United Kingdom
Sponsors
ACM: Association for Computing Machinery
SIGMULTIMEDIA: ACM Special Interest Group on Multimedia
Publisher
ACM  New York, NY, USA
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ABSTRACT

We address the problem of searching multimedia by semantic similarity in a keyword space. In contrast to previous research we represent multimedia content by a vector of keywords instead of a vector of low-level features. This vector of keywords can be obtained through user manual annotations or computed by an automatic annotation algorithm. In this setting, we studied the influence of two aspects of the search by semantic similarity process: (1) accuracy of user keywords versus automatic keywords and (2) functions to compute semantic similarity between keyword vectors of two multimedia documents. We consider these two aspects to be crucial in the design of a keyword space that can exploit social-media information and can enrich applications such as Flickr and YouTube. Experiments were performed on an image and a video dataset with a large number of keywords, with different similarity functions and with two annotation methods. Surprisingly, we found that multimedia semantic similarity with automatic keywords performs as good as or better than 95% accurate user keywords.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
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Collaborative Colleagues:
João Magalhães: colleagues
Fabio Ciravegna: colleagues
Stefan Rüger: colleagues