Location: Conferences » External contributions » Semantic and Digital Media Technologies

Enriching a Thesaurus to Improve Retrieval of Audiovisual Documents

author: Véronique Malaisé, Vrije Universiteit Amsterdam (VU)
published: Dec. 18, 2008,   recorded: December 2008,   views: 2638


Related Open Educational Resources

Related content

Report a problem or upload files

If you have found a problem with this lecture or would like to send us extra material, articles, exercises, etc., please use our ticket system to describe your request and upload the data.
Enter your e-mail into the 'Cc' field, and we will keep you updated with your request's status.
Lecture popularity: You need to login to cast your vote.


In many archives of audiovisual documents, annotation and retrieval are done using metadata from a structured vocabulary or a thesaurus. In practice, many of these thesauri have limited or no structure. The objective of this paper is to find out whether retrieval of audiovisual resources from a collection indexed with an in-house thesaurus can be improved by anchoring the thesaurus to an external, semantically richer thesaurus. We propose a method to enrich the structure of a thesaurus and we investigate its added value for retrieval purposes. We first anchor the thesaurus to an external resource, WordNet. From this anchoring we infer relations between pairs of terms in the thesaurus that were previously unrelated. We employ the enriched thesaurus in a retrieval experiment on a TRECVID 2007 data set. The results are promising: with simple techniques we are able to enrich a thesaurus in such a way that it adds to retrieval performance.

See Also:

Download slides icon Download slides: samt08_malaise_etir_01.pdf (1.1 MB)

Help icon Streaming Video Help

Link this page

Would you like to put a link to this lecture on your homepage?
Go ahead! Copy the HTML snippet !

Write your own review or comment:

make sure you have javascript enabled or clear this field: