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Design and Development of Recommender Dialogue Systems
Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
2004 (English)Licentiate thesis, monograph (Other academic)
Abstract [en]

The work in this thesis addresses design and development of multimodal dialogue recommender systems for the home context-of-use. In the design part, two investigations on multimodal recommendation dialogue interaction in the home context are reported on. The first study gives implications for the design of dialogue system interaction including personalization and a three-entity multimodal interaction model accommodating dialogue feedback in order to make the interaction more efficient and successful. In the second study a dialogue corpus of movie recommendation dialogues is collected and analyzed, providing a characterization of such dialogues. We identify three initiative types that need to be addressed in a recommender dialogue system implementation: system-driven preference requests, userdriven information requests, and preference volunteering. Through the process of dialogue distilling, a dialogue control strategy covering system-driven preference requests from the corpus is arrived at.

In the development part, an application-driven development process is adopted where reusable generic components evolve through the iterative and incremental refinement of dialogue systems. The Phase Graph Processor (PGP) design pattern is one such evolved component suggesting a phase-based control of dialogue systems. PGP is a generic and flexible micro architecture accommodating frequent change of requirements inherent of agile, evolutionary system development. As PGP has been used in a series of previous information-providing dialogue system projects, a standard phase graph has been established that covers the second initiative type; user-driven information requests. The phase graph is incrementally refined in order to provide user preference modeling, thus addressing the third initiative type, and multimodality as indicated by the user studies. In the iterative development of the multimodal recommender dialogue system MADFILM the phase graph is coupled with the dialogue control strategy in order to cater for the seamless integration of the three initiative types.

Place, publisher, year, edition, pages
Institutionen för datavetenskap , 2004. , 137 p.
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1079
Keyword [en]
Multimodal, PGP, information-providing, dialogue systems, multimodality
National Category
Computer Science
URN: urn:nbn:se:liu:diva-5669Local ID: LiU-TEK-LIC-2004:08ISBN: 91-7373-918-9OAI: diva2:21429
2004-04-04, 00:00 (English)
Available from: 2004-03-24 Created: 2004-03-24 Last updated: 2014-01-13Bibliographically approved

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Johansson, Pontus
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