Promoting extension and reuse in a spoken dialog manager: An evaluation of the queen's communicator

Authors:
Philip Hanna;Ian O'neill;Craig Wootton;Michael Mctear
Affiliations:
Queen's University Belfast, Belfast, Northern Ireland;Queen's University Belfast, Belfast, Northern Ireland;University of Ulster, Newtownabbey, Northern Ireland;University of Ulster, Newtownabbey, Northern Ireland
Venue:
ACM Transactions on Speech and Language Processing (TSLP)
Year:
2007

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Abstract

This article describes how an object-oriented approach can be applied to the architectural design of a spoken language dialog system with the aim of facilitating the modification, extension, and reuse of discourse-related expertise. The architecture of the developed system is described and a functionally similar VoiceXML system is used to provide a comparative baseline across a range of modification and reuse scenarios. It is shown that the use of an object-oriented dialog manager can provide a capable means of reusing existing discourse expertise in a manner that limits the degree of structural decay associated with system change.