5th International Conference on Spoken Language Processing

Sydney, Australia
November 30 - December 4, 1998

A Schema Based Approach To Dialog Control

Paul C. Constantinides, Scott Hansma, Chris Tchou, Alexander I. Rudnicky

Carnegie Mellon University, USA

Frame-based approaches to spoken language interaction work well for limited tasks such as information access, given that the goal of the interaction is to construct a correct query then execute it. More complex tasks, however, can benefit from more active system participation. We describe two mechanisms that provide this, a modified stack that allows the system to track multiple topics, and form-specific schema that allow the system to deal with tasks that involve completion of multiple forms. Domain-dependent schema specify system behavior and are executed by a domain-independent engine. We describe implementations for a personal calendar system and for an air travel planning system.

Full Paper

Bibliographic reference.  Constantinides, Paul C. / Hansma, Scott / Tchou, Chris / Rudnicky, Alexander I. (1998): "A schema based approach to dialog control", In ICSLP-1998, paper 0637.