- P. Constantinides, Scott Hansma, C. Tchou, Alexander I. Rudnicky. 1998. A schema based approach to dialog control. Abstract: 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.
