Large margin classification using the perceptron algorithm
COLT' 98 Proceedings of the eleventh annual conference on Computational learning theory
High-performance, open-domain question answering from large text collections
High-performance, open-domain question answering from large text collections
Learning question classifiers: the role of semantic information
Natural Language Engineering
Spoken Document Retrieval Based on Approximated Sequence Alignment
TSD '08 Proceedings of the 11th international conference on Text, Speech and Dialogue
CLEF'08 Proceedings of the 9th Cross-language evaluation forum conference on Evaluating systems for multilingual and multimodal information access
Robust question answering for speech transcripts: UPC experience in QAst 2008
CLEF'08 Proceedings of the 9th Cross-language evaluation forum conference on Evaluating systems for multilingual and multimodal information access
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This paper describes the participation of the Technical University of Catalonia in the CLEF 2009 Question Answering on Speech Transcripts track. We have participated in the English and Spanish scenarios of QAST. For both manual and automatic transcripts we have used a robust factual Question Answering that uses minimal syntactic information. We have also developed a NERC designed to handle automatic transcripts. We perform a detailed analysis of our results and draw conclusions relating QA performance to word error rate and the difference between written and spoken questions.