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In this paper, we propose a general formal framework for organising multiagent systems whose participants are rational agents. This model is based on the idea of <i>organisational mechanisms</i>. These are mechanisms introduced in a multiagent system with the aim of influencing the behaviour of the agents towards more effectiveness with regard to some(More)
The problem of selecting correct counterparts to interact with is of particular relevance in open and dynamic environments. This problem increases when third parties may vary their behaviour at will. In this paper we examine the problem of service provider selection using trust and reputation techniques. Most approaches to service provider selection are(More)
This paper provides a brief overview of the field of coordination in multiagent systems, and outlines its relation to current efforts working towards a paradigm for smart, next-generation distributed systems, where coordination is based on the concept of agreement between computational entities. Two examples are provided to visualize the types of mechanisms(More)
In the emerging field of m-Health, advanced applications provide healthcare to people anywhere, anytime using broadband and wireless communications, as well as mobile computing devices. The notion of Service-Oriented Multi-Agent Systems (SOMAS) that has recently been proposed appears to adequately capture the requirements of applications in this field. The(More)
In this paper we present a hybrid reputation model focused on organizational structures that attempts to solve problems associated with both centralized and decentralized reputation models. Agents in our approach are able not only to evaluate the behavior of others and store reputations values but also to send such information to a centralized mechanism and(More)
Virtual Organizations (VOs) are becoming an increasingly important research topic in the field of Multi-Agent Systems (MAS). The problem of selecting suitable counterparts to interact with is of particular relevance for agents belonging to a VO. This issue has been extensively investigated, applying probability or cognitive approaches, but very few focus(More)
—Organizational mechanisms can be introduced in a multi-agent system with the aim of influencing the behavior of agents to achieve their objectives in a proper way. Thus, they are designed to achieve a better coordination between agents. In this paper, we propose to model organizational mechanisms by means of artifacts, which were presented within the(More)
The global objective of open multiagent systems might be in conflict with individual preferences of rational agents participating in such systems. Addressing this problem, we propose a mechanism able to attach incentives to agent actions such that the global utility of the system is improved. Such incentives are dynamically adjusted to each agent's(More)