To facilitate the Human Computer Interaction will be needed to create a friendly interface in AmI. Thus, in this work we propose a semantic knowledge model to represent facial emotions of a virtual character. These emotions depend on the personality, preferences, goals of the character and the environment events. The virtual character's emotions are the nonverbal communication interface between the system and the user. Furthermore, we develop an algorithm to deduce the resultant emotion using

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... evious information, and we represent it with a set of activated facial animation parameters.