5th International Conference on Spoken Language Processing

Sydney, Australia
November 30 - December 4, 1998

Interfaces for Speech Recognition Systems: the Impact of Vocabulary Constraints and Syntax on Performance

Kate S. Hone, David Golightly

ICL Institute of Information Technology, University of Nottingham, UK

An experiment was conducted to investigate the effects of vocabulary constraints and syntax on human interactions with a speech interactive system. Three dialogue styles for a telephone banking application, all using constrained vocabularies, were compared: yes/no, menu and query prompts. These styles differ both in the degree of vocabulary constraint, and in how that constraint is communicated to the user. It was found that although i t involved more dialogue steps the yes/no interaction style was the most effective in terms of both task completion rates and performance time. The query strategy was least preferred by users.

Full Paper

Bibliographic reference.  Hone, Kate S. / Golightly, David (1998): "Interfaces for speech recognition systems: the impact of vocabulary constraints and syntax on performance", In ICSLP-1998, paper 0519.