2026-09-19T15:01:05Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/296852022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Justine Cassell.
Reinstein, Gabriel A. (Gabriel Alexander), 1980-
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2006-03-24T16:15:04Z
2006-03-24T16:15:04Z
2003
2003
http://hdl.handle.net/1721.1/29685
53867143
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
Includes bibliographical references (leaves 53-55).
When people have a face-to-face conversation, they don't just spout information blindly-they work to make sure that both participants understand what has been said. This process of ensuring that what has been said is added to the common ground of the conversation is called grounding. This thesis explores recent research into the verbal and nonverbal means for grounding, and presents an implementation of a face-to-face grounding system in an embodied conversational agent that is based on a model of grounding extracted from the research. This is the first such agent that supports nonverbal grounding, and so this thesis represents both a proof of concept and a guide for future work in this area, showing that it is possible to build a dialogue system that implements face-to-face grounding between a human and an agent based on an empirically-derived model. Additionally, this thesis describes a vision system, based on a stereo-camera head-pose tracker and using a recently proposed method for head-nod detection, that can robustly and accurately identify head nods and gaze state.
by Gabriel A. Reinstein.
M.Eng.
55 leaves
1980912 bytes
1980721 bytes
application/pdf
application/pdf
eng
Massachusetts Institute of Technology
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http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
An implementation of face-to-face grounding in an embodied conversational agent
Thesis
application/pdf
Publication
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