Istituto di Scienza e Tecnologie dell'Informazione     
Di Nunzio G., Ferro N., Mandl T., Peters C. CLEF 2007: ad hoc track overview. (Lecture Notes in Computer Science, vol. 5152). Berlin/Heidelberg: Springer, 2008.
We describe the objectives and organization of the CLEF 2007 Ad Hoc track and discuss the main characteristics of the tasks offered to test monolingual and cross-language textual document retrieval systems. The track was divided into two streams. The main stream offered mono- and bilingual tasks on target collections for central European languages (Bulgarian, Czech and Hungarian). Similarly to last year, a bilingual task that encouraged system testing with non-European languages against English documents was also offered; this year, particular attention was given to Indian languages. The second stream, designed for more experienced participants, offered mono- and bilingual "robust" tasks with the objective of privileging experiments which achieve good stable performance over all queries rather than high average performance. These experiments re-used CLEF test collections from previous years in three languages (English, French, and Portuguese). The performance achieved for each task is presented and discussed.
URL: http://www.springerlink.com/content/u84r82n43w35/?p=5f8f38e17ca04de8a6e2aaba39d38e4f&pi=0
DOI: 10.1007/978-3-540-85760-0_2
Subject Cross language information retrieval
System performance
H.3.4 Performance evaluation
H.5.1 Multimedia Information Systems

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