M. de Rijke
- Overview of the CLEF 2005 Multilingual Question Answering Track
- Book/source title
- Working Notes for the CLEF 2005 Workshop
- Document type
- Conference contribution
- Faculty of Science (FNWI)
- Informatics Institute (IVI)
The general aim of the third CLEF Multilingual Question Answering Track was to set up a common and replicable evaluation framework to test both monolingual and cross-language Question Answering (QA) systems that process queries and documents in several European languages. Nine target languages and ten source languages were exploited to enact 8 monolingual and 73 cross-language tasks. Twenty-four groups participated in the exercise.Overall results showed a general increase in performance in comparison to last year. The best performing monolingual system irrespective of target language answered 64.5% of the questions correctly (in the monolingual Portuguese task), while the average of the best performances for each target language was 42.6%. The cross-language step instead entailed a considerable drop in performance. In addition to accuracy, the organisers also measured the relation between the correctness of an answer and a system¿s stated confidence in it, showing that the best systems did not always provide the most reliable confidence score.
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