Abstract
In this paper we present our QA@CLEF 2007 version of Quantico, a cross-language open domain question answering (QA) system for German and English document collections. The main features of the system are: use of a preemptive off-line document annotation with linguistic information; online extraction of abbreviation-expansion pairs and appositional constructions for the answer extraction; use of online translation services for the crosslingual scenarios; use of redundancy as an indicator of good answer candidates; selection of the best answers based on distance metrics defined over graph representations of the answer’s context. The results of evaluating the system’s performance by QA@CLEF 2007 were as follows: for the German-German run we achieved an overall accuracy (ACC) of 30 %; for English-German 18.5 % (ACC); for German-English 7 % (ACC), for Spanish-English 10 % (ACC) and for the Portuguese-German run 7 % (ACC).
The work presented in this paper was partly supported by the European Commission, contract FP6-33860, Question Answering Learning technologies in a muliLingual and Multimodal Environment (QALL-ME, http://qallme.fbk.eu/ ) and by a research grant from the German Federal Ministry of Education and Research (BMBF) to the DFKI project HyLaP ( http://hylap.dfki.de/ , FKZ: 01 IW F02).
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References
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Sacaleanu, B., Neumann, G., Spurk, C. (2008). DFKI-LT at QA@CLEF 2007. In: Peters, C., et al. Advances in Multilingual and Multimodal Information Retrieval. CLEF 2007. Lecture Notes in Computer Science, vol 5152. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85760-0_35
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DOI: https://doi.org/10.1007/978-3-540-85760-0_35
Publisher Name: Springer, Berlin, Heidelberg
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