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Erschienen in:
2009 | OriginalPaper | Buchkapitel
Evaluation of Diversity-Focused Strategies for Multimedia Retrieval
verfasst von : Julien Ah-Pine, Gabriela Csurka, Jean-Michel Renders
Erschienen in: Evaluating Systems for Multilingual and Multimodal Information Access
Verlag: Springer Berlin Heidelberg
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In this paper, we propose and evaluate different strategies to promote diversity in the top results of multimedia retrieval systems. These strategies consist in clustering, explicitly or implictly, the elements of the top list of some initial ranking and produce a re-ranking that favours elements belonging to different clusters. We evaluate these strategies in the particular case of ImageCLEFPhoto 2008 Collection. Results show that most of these strategies succeed in increasing a diversity performance measure, while keeping or slightly degrading precision of the top list and, more interestingly, they achieve this in complementary ways.