In this paper we describe MASQ (Multi-Agent Systems based on Quadrants), a model that defines four perspectives over an agent-based interaction according to two axes: internal/external and individual/collective. With MASQ, we mainly show how to integrate the essential elements that intervene in the description of the interaction process such as agents, environments, organizations and institutio...

We describe how, by modelling plot generation as a Continual Multiagent Planning process, dynamic stories can be generated in which characters not only inteleave perception, action and interaction, but in which also beliefs and motivations may change repeatedly, thus driving the plot forward.

We aligned two fundamentally different models of smallpox transmission after a bioterrorist attack: A location-explicit multi-agent model (BioWar) and the conventional epidemiological box model, called a SIR model for Susceptible-Infected-Recovered. The purpose of this alignment is part of a greater validation process for BioWar. From this study we were able to contribute to the overall validat...

Developers of pedestrian models often overlook the fact that pedestrians are subjected to a multitude of influences when walking. The majority of existing models only focus on a single aspect, typically the avoidance of obstructions or other pedestrians. PEDFLOW, a microscopic, agent-based model, uses an implementation of context-mediated behavior to enable the agents to deal with multiple caus...

We present a comparison of five different models built upon the same individual behavior hypothesis of a collective phenomenon present in peerto-peer file exchange networks: “free-riding”. We study a global analytical model and four agent based models. Multi-agent models include the space and time dimensions rarely seen in the literature discussing aggregated models of the collective phenomenon...

We participate in the RoboCup four-legged league, and view this as a testbed for the use of multiagent coordination techniques. While the techniques we currently use are rather straightforward, our longterm goal is to adopt some of the more complex mechanisms we have been developing in other research. This paper describes these mechanisms, our work with RoboCup to date, and sketches the directi...

This paper proposes a combined mechanism for coordinating agents in timed normative multi-agent systems. Timing constraints in a multi-agent system make it possible to force action execution to happen before certain time invariants are violated. In such multiagent systems we achieve coordination at two orthogonal levels with respect to states and actions. On the one hand, the behaviour of indiv...

The consideration of security requirements in the development of multi-agent systems is a very difficult task. However, only few approaches have been proposed that try to integrate security issues as internal part of the development process. Amongst them, secure Tropos has been proposed as a structured approach towards the consideration of security issues in the development of multiagent system...

In multiagent systems, each agent has its own local view of the environment. Nevertheless, agents try to cooperate to reach a common global goal. In this paper, we use a suitable Grothendieck topology and sheaves to model the agents’ local data and their communication.

An ambient agent system is presented estimating a human’s dynamics of desiring and being tempted. The agent is equipped with a dynamical model of the human’s processes which describes how a desire relates to responses in the form of being prepared for certain actions, which in turn relate to feelings which can be biased, due to experiences in the past. It is shown how by use of this dynamical m...