Creating Interactive Virtual Humans: Some Assembly Required
IEEE Intelligent Systems
The reliability of a dialogue structure coding scheme
Computational Linguistics
Towards a tool for the Subjective Assessment of Speech System Interfaces (SASSI)
Natural Language Engineering
Information state and dialogue management in the TRINDI dialogue move engine toolkit
Natural Language Engineering
Dialogue complexity with portability?: research directions for the information state approach
HLT-NAACL-DIALOGUE '03 Proceedings of the HLT-NAACL 2003 workshop on Research directions in dialogue processing - Volume 7
Multi-party, Multi-issue, Multi-strategy Negotiation for Multi-modal Virtual Agents
IVA '08 Proceedings of the 8th international conference on Intelligent Virtual Agents
Serious Games for Language Learning: How Much Game, How Much AI?
Proceedings of the 2005 conference on Artificial Intelligence in Education: Supporting Learning through Intelligent and Socially Informed Technology
Building effective question answering characters
SigDIAL '06 Proceedings of the 7th SIGdial Workshop on Discourse and Dialogue
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We present and evaluate two state-of-the art dialogue systems developed to support dialog with French speaking virtual characters in the context of a serious game: one hybrid statistical/symbolic and one purely statistical. We conducted a quantitative evaluation where we compare the accuracy of the interpreter and of the dialog manager used by each system; a user based evaluation based on 22 subjects using both the statistical and the hybrid system; and a corpus based evaluation where we examine such criteria as dialog coherence, dialog success, interpretation and generation errors in the corpus of Human-System interactions collected during the user-based evaluation. We show that although the statistical approach is slightly more robust, the hybrid strategy seems to be better at guiding the player through the game.