The relationship between recall and precision
Journal of the American Society for Information Science
Data & Knowledge Engineering - NLDB2002
ISM '08 Proceedings of the 2008 Tenth IEEE International Symposium on Multimedia
Implicit image tagging via facial information
Proceedings of the 2nd international workshop on Social signal processing
BI'10 Proceedings of the 2010 international conference on Brain informatics
Image and Vision Computing
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An approach for implementing affective information as tags for multimedia content indexing and retrieval is presented. The approach can be used for implicit as well as explicit tags and is presented here using data recorded during the viewing of movie fragments containing annotations and physiological signal recordings. For retrieval based on affective queries, a representation of the query-words is defined in the arousal-valence space in the form of a Gaussian probability distribution and a retrieval method based on this representation is presented. Validation of retrieval accuracy is performed using Precision and Recall parameters. Results show that the use of arousal and valence as affective tags can improve retrieval results.