In this talk we survey our approaches to verbal and nonverbal interaction with agents in virtual worlds. In the virtual worlds we have designed various agents have been introduced, each emphasizing a specific task or interaction behavior. Among them are agents that take care of information services, pedagogical agents, adviser agents and navigation agents that guide visitors of an environment. Speech and language capabilities are modest, the interesting points are the integration of these modalities with other interaction modalities, especially those that can be offered when these agents inhabit virtual worlds, and the introduction of new application areas for agents having these capabilities. Some ideas about modelling intelligence and emotions and displaying emotions - e.g., in facial expressions of embodied agents - will also be presented.

References: http://parlevink.cs.utwente.nl/
http://wwwhome.cs.utwente.nl/~anijholt/