Handling speech input in the Ritel QA dialogue system

B.W. van Schooten, Sophie Rosset, Olivier Galibert, Aurelien Max, Hendrikus J.A. op den Akker, Gabriel Illouz

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    The Ritel system aims to provide open-domain question answering to casual users by means of a telephone dialogue. This implies some unique challenges, such as very fast overall performance and large-vocabulary speech recognition. Speech QA is an error-prone process, but errors or problems that occur may be resolved with help of user feedback, as part of a natural dialogue. This paper reports on a pilot study conducted with the latest version of Ritel, which includes search term confirmation and improved follow-up question handling, as well as various improvements on the other system components. We collected a small dialogue corpus with the new system, which we use to evaluate and discuss it.
    Original languageUndefined
    Title of host publicationInterspeech 2007
    Place of PublicationAntwerp
    PublisherInternational Speech Communication Association (ISCA)
    Number of pages4
    ISBN (Print)1990-9772
    Publication statusPublished - 1 Sep 2007
    Event8th Annual Conference of the International Speech Communication Association, INTERSPEECH 2007 - Antwerp, Belgium
    Duration: 27 Aug 200731 Aug 2007
    Conference number: 8

    Publication series

    PublisherInternational Speech Communication Association
    ISSN (Print)1990-9772


    Conference8th Annual Conference of the International Speech Communication Association, INTERSPEECH 2007
    Abbreviated titleINTERSPEECH
    Internet address


    • HMI-HF: Human Factors
    • HMI-SLT: Speech and Language Technology
    • METIS-245785
    • EC Grant Agreement nr.: FP6/506909
    • EWI-11420
    • IR-64469

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