This review paper presents an assessment of the current state of knowledge and capability in seasonal climate prediction at the end of the 20th century. The discussion covers the full range of issues involved in climate forecasting, including (1) the theory and empirical evidence for predictability; (2) predictions of surface boundary conditions, such as sea surface temperatures (SSTs) that dri...

A cooperative intelligent agent is a user's personal consultant that takes care of problems the user got, and solve them either by itself or through cooperation. To construct a suitable organization structure which allows individual agents to easily reason about the others' activities, and thus nd the peers, is a key issue for e cient cooperation. In this paper, we suggest an activity-oriented ...

We study the problem of checking the competence of communicative agents operating in a global society in order to receive and offer electronic services. Such a society will be composed of local subsocieties that will often be semi-open, viz., entrance of agents in a semiopen society is conditional to specific admission criteria. Assuming that a candidate agent provides an abstract description o...

Agent based simulation is a powerful tool for the research of complex systems such as human society. The important key word of this kind of research is “bounded rationality” of the agents. From the standpoint, we adopt following two hypotheses as the basis of our analysis: (1) each agent interacts only with his neighbors, and (2) each agent behaves by mimicking its neighbors. How the society gr...

An agent-society of the future is envisioned to be as complex as a human society. Just like human societies, such multiagent systems (MAS) deserve an in-depth study of the dynamics, relationships, and interactions of the constituent agents. An agent in a MAS may have only approximate a priori estimates of the trustworthiness of another agent. But it can learn from interactions with other agents...

since there are various views on the civil society, in this paper the writer first introduces two main views, a limited view and a broad view, explaining the concept based on these two views. the two views, formed by social and political theorists, are firmly grounded in political and social literature. to explain the concept, the writer introduces the indexes of the civil society, the most imp...

In this paper, we propose a completely agent-based approach for Information Gathering on a information network with a large number of distributed heterogeneous sources, such as Internet. Locating and accessing information in such a large distributed system which changes dynamically is challenging and is most suitable for agent-based solutions. As one agent cannot have all the necessary knowledg...

Multi-agent systems (MAS) are rapidly emerging as a powerful paradigm for modeling and developing distributed information systems. In an open multi-agent system, agents can not only join or leave an agent society at will, but also take or release roles dynamically. Most of existing work on MAS uses role modeling for system analysis; however, role models are only used at conceptual level with no...

This paper draws upon our previous work [7, 16] in which we proposed the organisation of services around the concept of artificial agent societies and presented a framework for representing roles and protocols using LTSs. The agent would apply for a role in the society, which would result in its participation in a number of protocols. We advocated the use of the games-based metaphor for describ...

Norms have facilitated smoother functioning in human societies. In the field of normative multi-agent systems researchers are interested in investigating how the concept of social norms can be used to facilitate social order in electronic agent societies. In this context, the area of norm emergence has attracted a lot of interest among researchers. The objectives of this paper are two-fold. Fir...