n this paper we propose a system architecture in order to observe and analyze user's behaviours in the scope of educative games. It concerns the observation of autistic child's actions during a session. Thus we can extract conclusions relating to her/his behaviour and provide in a real time personal way adequate activities, keeping in mind the expert's advice. Our proposition is based on the optimization of the extraction of information from heterogeneous data according to the context. We have applied our results on a software environment realized for children with autism according to the needs of a psychiatric team.