Evaluating Dialogue Strategies in a Spoken Dialogue System for Email

F. Farfán, H. Cuayáhuitl, and A. Portilla (Mexico)


Dialogue strategies, spoken dialogue systems, email by phone, speech recognition, and word spotting


This paper presents an evaluation of directed dialogue (DD) and mixed initiative (MI) strategies in a spoken language system for Email. We compare the DD strategy, in which the system controls the dialog, to the MI strategy, in which users can flexibly control the dialog. For evaluating both strategies we used the PARADISE framework, which sup ports comparisons among dialogue strategies. Our experi mental results show that the MI strategy performance sur passes the DD strategy in efficiency and user satisfaction, but needs more work for achieving qualitative measures and task success.

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