Research on embodied teammate agents which use dialog and gesture to coordinate their activities with the user is relatively sparse compared to conversational agents. We propose a dialog management model to handle interactions between user and agent in a virtual basketball environment. The model describes how a joint action should be initialized and executed through dialog, and how it should handle new dialog interruptions. The model also allows the agent to be parameterized to exhibit different combinations of speech and gestural behavior over repeated joint actions. We propose that this model allows us to conduct several types of unique experiments in this environment.
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