CWI used PF/Tijah, a flexible XML retrieval system, to evaluate image retrieval based on textual evidence in the context of the wikipediaMM task at ImageCLEF 2008. We employed a language modelling framework and found that the text associated with the Wikipedia images is a good source of evidence. We also investigated a length prior and found that biasing towards images with longer descriptions than the ones retrieved by our language modelling approach is not benficial.

Additional Metadata
THEME Information (theme 2), Information (theme 2)
Publisher CLEF-campaign
Project Image Indexing and reTrievAL in the Large Scale
Conference Workshop on Cross-Language Evaluation Forum
Tsikrika, T, Rode, H, & de Vries, A.P. (2008). CWI at ImageCLEF 2008. In Working notes of the 9th Workshop of the Cross-Language Evaluation Forum. CLEF-campaign.