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The Use of Case-Based Reasoning in a Human-Robot Dialog System
Linköping University, Department of Computer and Information Science, CASL. Linköping University, The Institute of Technology.
2006 (English)Licentiate thesis, monograph (Other academic)
Abstract [en]

As long as there have been computers, one goal has been to be able to communicate with them using natural language. It has turned out to be very hard to implement a dialog system that performs as well as a human being in an unrestricted domain, hence most dialog systems today work in small, restricted domains where the permitted dialog is fully controlled by the system.

In this thesis we present two dialog systems for communicating with an autonomous agent:

The first system, the WITAS RDE, focuses on constructing a simple and failsafe dialog system including a graphical user interface with multimodality features, a dialog manager, a simulator, and development infrastructures that provides the services that are needed for the development, demonstration, and validation of the dialog system. The system has been tested during an actual flight connected to an unmanned aerial vehicle.

The second system, CEDERIC, is a successor of the dialog manager in the WITAS RDE. It is equipped with a built-in machine learning algorithm to be able to learn new phrases and dialogs over time using past experiences, hence the dialog is not necessarily fully controlled by the system. It also includes a discourse model to be able to keep track of the dialog history and topics, to resolve references and maintain subdialogs. CEDERIC has been evaluated through simulation tests and user tests with good results.

Place, publisher, year, edition, pages
Institutionen för datavetenskap , 2006. , 130 p.
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1248
Keyword [en]
Dialog manager, machine learning, case-based reasoning, case-based planning, helicopter, natural language
National Category
Computer Science
URN: urn:nbn:se:liu:diva-6402ISBN: 91-85523-78-X (print)OAI: diva2:21808
2006-06-12, Visionen, Hus B, Linköping universitet, Linköping, 13:15 (English)
Report code: LiU{Tek{Lic{2006:29.Available from: 2006-10-10 Created: 2006-10-10 Last updated: 2009-02-18

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Eliasson, Karolina
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