LREC 2000 2nd International Conference on Language Resources & Evaluation
 

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Title Evaluation of a Dialogue System Based on a Generic Model that Combines Robust Speech Understanding and Mixed-initiative Control
Authors Diaz Verdejo J.E. (Dpto. Electrónica y Tecnología de Computadores, Universidad de Granada, 18071 Granada, España (Spain), Tel.: +34-958-243193, FAX: +34-958-243230, E-mail: ,jedv@hal.ugr.es)
López-Cózar R. (Dpto. Electrónica y Tecnología de Computadores, Universidad de Granada, 18071 Granada, España (Spain), Tel.: +34-958-243193, FAX: +34-958-243230, E-mail: ramon@hal.ugr.es)
Rubio A.J. (Dpto. Electrónica y Tecnología de Computadores, Universidad de Granada, 18071 Granada, España (Spain), Tel.: +34-958-243193, FAX: +34-958-243230, E-mail: rubio@hal.ugr.es)
De la Torre A. (Dpto. Electrónica y Tecnología de Computadores, Universidad de Granada, 18071 Granada, España (Spain)., Tel.: +34-958-243193, FAX: +34-958-243230, E-mail: atv@hal.ugr.es)
Keywords Evaluation, Speech Generation, Speech Recognition, Speech Understanding, Spoken Dialogue Systems
Session Session SO5 - Evaluation of Dialogue
Full Paper 101.ps, 101.pdf
Abstract This paper presents a generic model to combine robust speech understanding and mixed-initiative dialogue control in spoken dialogue systems. It relies on the use of semantic frames to conceptually store user interactions, a frame-unification procedure to deal with partial information, and a stack structure to handle initiative control. This model has been successfully applied in a dialogue system being developed at our lab, named SAPLEN, which aims to deal with the telephone-based product orders and queries of fast food restaurants’ clients. In this paper we present the dialogue system and describe the new model, together with the results of a preliminary evaluation of the system concerning recognition time, word accuracy, implicit recovery and speech understanding. Finally, we present the conclusions and indicate possibilities for future work.