Using syntactic knowledge for QA

Authors:
Gosse Bouma;Ismail Fahmi;Jori Mur;Gertjan Van Noord;Lonneke Van Der Plas;Jörg Tiedemann
Affiliations:
Information Science, University of Groningen, Groningen, The Netherlands;Information Science, University of Groningen, Groningen, The Netherlands;Information Science, University of Groningen, Groningen, The Netherlands;Information Science, University of Groningen, Groningen, The Netherlands;Information Science, University of Groningen, Groningen, The Netherlands;Information Science, University of Groningen, Groningen, The Netherlands
Venue:
CLEF'06 Proceedings of the 7th international conference on Cross-Language Evaluation Forum: evaluation of multilingual and multi-modal information retrieval
Year:
2006

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Abstract

We describe the system of the University of Groningen for the monolingual Dutch and multilingual English to Dutch QA tasks. First, we give a brief outline of the architecture of our QA-system, which makes heavy use of syntactic information. Next, we describe the modules that were improved or developed especially for the CLEF tasks, among others incorporation of syntactic knowledge in IR, incorporation of lexical equivalences and coreference resolution, and a baseline multilingual (English to Dutch) QA system, which uses a combination of Systran and Wikipedia (for term recognition and translation) for question translation. For non-list questions, 31% (20%) of the highest ranked answers returned by the monolingual (multilingual) system were correct.