In this paper, we propose a completely agent-based approach for Information Gathering on 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. Agentbased solution is most suitable in such situation. We rst review the drawbacks of existing non-...

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In multiagent systems a common problem is how to assign tasks to other agents. It is very desirable to be able to guarantee the error rate of a solution in a multiagent system’s society. In this paper, a novel approach for this problem has been introduced by devising social control mechanisms and simulating their mathematical model. It is also shown that the multiagent system is able to achieve...

The paper describes the design and implementation of a security administration tool, which can monitor a multiagent system (MAS). This is a web-based monitoring tool that enables the user to interact with a Cougaar-based agent society. It provides an interface to efficiently search and visualize security events and alert messages produced by active sensors and analyzers. The goal of this work i...

 In this paper an artificial society is being assumed as a multi agents system. A sugarscape model consisting of a cellular landscape of resources is used to form an interaction among the agents of the population. In the model, agents find the resources to survive. They are supposed to move and search and because of this movement, an evolutionary social behavior will develope. From model analys...

The Semantic Web vision has evolved in the last years as a blueprint for a knowledge-based framework aimed at crossing the chasm from the current Web of unstructured information resources to a Web equipped with metadata and oriented to delegation of tasks to software agents. Ontologies are the key piece of this framework in that they provide shared semantics to metadata, thus enabling a degree ...

The Agent Society framework that we have developed distinguishes between the mechanisms though which the structure and global behavior of the model is described and coordinated, and the aims and behavior of the serviceproviders (agents) that populate the model. In this framework contracts are used to integrate the top-down specification of organizational structures with the autonomy of particip...

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In this paper we discuss a tag-based model that facilitates knowledge sharing. Sharing the knowledge incurs a cost for the sharing agent, and thus non-sharing is the preferred option for selfish agents. Through agent-based simulations we show that knowledge sharing is possible even in the presence of non-sharing agents in the population. We also show that the performance of an agent society can...