Abstract 1 Different definitions of agents use concepts such as autonomy, pro-activity, reactivity, social abilities, and intentional models. Very few (if any), however, refer to an agent’s external representation: the part of an agent that can be observed. This representation is the visible part of an agent: (part of) its embodiment. This external representation may be limited to an agent’s identity (e.g., name of owner or an IP address of the host on which it resides). It may also contain extensive public information about an agent (e.g., its profile), or it may even be a graphical figure (e.g., an avatar) representing an agent. The environment of an agent includes objects, and representations of itself and other agents. The distinction between an agent’s external representation and an agent’s internal processes and knowledge makes it possible to consider new ways to implement large scale agent systems. In the multi-agent system community, large multi-agent systems are co...
Frances M. T. Brazier, Maarten van Steen, Niek J.