ImageCLEF's Wikipedia Retrieval task provides a testbed for the system-oriented evaluation of multimedia information retrieval from a collection of Wikipedia images. The aim is to investigate retrieval approaches in the context of a large and heterogeneous collection of images (similar to those encountered on the Web) that are searched for by users with diverse information needs. This paper presents an overview of the resources, topics, and assessments of the Wikipedia Retrieval task at ImageCLEF 2010, summarizes the retrieval approaches employed by the participating groups, and provides an analysis of the main evaluation results.

CLEF-campaign
Image Indexing and reTrievAL in the Large Scale
Workshop on Cross-Language Evaluation Forum
Human-Centered Data Analytics

Popescu, A., Tsikrika, T., & Kludas, J. (2010). Overview of the wikipedia retrieval task at ImageCLEF 2010. In Working notes of the 11th Workshop of the Cross-Language Evaluation Forum. CLEF-campaign.