Visual Reranking for Image Retrieval over the Wikipedia Corpus.
Débora Myoupo, Adrian Stefan Popescu, Hervé Le Borgne, Pierre-Alain Moëllic · CLEF (Working Notes) · 2009
This paper describes the approach we developed for the WikipediaMM task on 2009 [4], which builds on our last year contribution. The main novelties are the refinement of textual query expansion procedure and the introduction of a k-NN based visual reranking procedure. Our main purpose was to test whether combining textual and content based retrieval improves over purely textual search and the results we report here confirm that combining modalities results in a significant improvement of results.