Abstract |
To endow virtual agents with more realistic affective behavior, the notion
of expectation-based emotions plays an important role: emotional states of
agents should not only be triggered by present stimuli, but also by
anticipation on future stimuli, and evaluation of past stimuli in the
context of these anticipations. Within this study, an extension of the
BDI-model with expectation-based emotions is proposed. The model has been
implemented in the modeling language LEADSTO. In addition, a game
application has been developed, in which a user can play a dice game
against an agent that is equipped with the emotion-based model. An
empirical evaluation indicates that the model significantly enhances the
agent's believability, in particular with respect to its involvement in
the situation. |