The LIMSI Participation to the QAst Track

The LIMSI Participation in the QAst Track

LIMSI participation in the QAst 2009 track

We present in this paper the three LIMSI question-answering systems on speech transcripts which participated to the QAst 2009 evaluation. These systems are based on a complete and multi-level analysis of both queries and documents. These systems use an automatically generated research descriptor. A score based on those descriptors is used to select documents and snippets. Three different method...

CLEF2007 Question Answering Experiments at Tokyo Institute of Technology

In this paper we describe the experiments carried out at Tokyo Institute of Technology for the CLEF 2007 QAst (Question Answering in speech transcripts) pilot task, as well as our results from the official evaluation. We apply a non-linguistic, data-driven approach to Question Answering (QA), based a noisy channel model. The system we use for the QAst evaluation comprises an Information Retriev...

INAOE at QAST 2009: Evaluating the Usefulness of a Phonetic Codification of Transcriptions

This paper describes the participation of the Laboratory of Language Technologies of INAOE at the QAST 2009 track. This participation was mainly focused on the evaluation of an enriched representation of transcriptions based on their phonetic codification. The idea that motivated the development of this new representation was to reduce the impact of the transcription errors by characterizing wo...

Robust Question Answering for Speech Transcripts: UPC Experience in QAst 2009

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 auto...