Cooperatio nan dGrou pUtility

In this paper, we propose an defin ition of cooperation to shared plans that takes into account the benefit of the whole group, where the group's benefit is computed by considering also the consequences of an agent's choice in terms of the actions that the other members of the group will do. In addition, the members of a group consider whether to adopt the goals of their partners: an agent should adopt these goals only when the adoption results in an increase of the group's benefit.