A Distributed Agent Architecture for Intelligent Multi-Domain Spoken Dialogue Systems

Bor-Shen LIN  Hsin-Min WANG  Lin-Shan LEE  

IEICE TRANSACTIONS on Information and Systems   Vol.E84-D   No.9   pp.1217-1230
Publication Date: 2001/09/01
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Speech and Hearing
agent architecture,  cooperative agents,  dialogue modeling,  multi-domain spoken dialogue,  

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Multi-domain spoken dialogue systems with high degree of intelligence and domain extensibility have long been desired but difficult to achieve. When the user freely surfs among different topics during the dialogue, it will be very difficult for the system to control the switching of the topics and domains while keeping the dialogue consistent, and decide when and how to take the initiative. This paper presents a distributed agent architecture for multi-domain spoken dialogue systems with high domain extensibility and intelligence. Under this architecture, different spoken dialogue agents (SDA's) handling different domains can be developed independently, and then smoothly cooperate with one another to achieve the user's multiple goals, while a user interface agent (UIA) can access the correct spoken dialogue agent through a domain switching protocol, and carry over the dialogue state and history so as to keep the knowledge processed coherently across different domains.