Mobile agent

In computer science, a mobile agent is a piece of software agent combined with data that is able to migrate from one computer to another autonomously and continue its execution on the destination with the ability to interact with other agents there. Rather than a client requesting data and performing actions, a mobile agent is sent to a server to perform those tasks. This paradigm delegates the work from the client and onto the server. A mobile agent is a type of software agent, with the feature of autonomy, social ability, learning, and most significantly, mobility. More specifically, a mobile agent is a process that can transport its state from one environment to another, with its data intact, and be capable of performing appropriately in the new environment. Mobile agents decide when and where to move. Movement is often evolved from RPC methods. Just as a user directs an Internet browser to "visit" a website (the browser merely downloads a copy of the site, or one version of it in the case of dynamic web sites), a mobile agent accomplishes a move through data duplication. When a mobile agent decides to move, it saves its own state (), transports this saved state to the new host and resumes execution from the saved state. A mobile agent is a specific form of mobile code, within the field of code mobility. However, in contrast to the remote evaluation and code on demand programming paradigms, mobile agents are active in that they can choose to migrate between computers at any time during their execution. This makes them a powerful tool for implementing distributed applications in a computer network. There are two types of mobile agents. The classification is based on their migration path. Mobile agents with predefined path: these have a static migration path. Free roaming mobile agent: these have a dynamic migration path. Depending on the present network condition, the mobile agent chooses its path. An open multi-agent system (MAS) is a system in which agents, that are owned by a variety of stakeholders, continuously enter and leave the system.

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Publications associées (3)

Personnes associées (2)

Fault-tolerant and transactional mobile agent execution

Stefan Pleisch

Mobile agents constitute a computing paradigm of a more general nature than the widely used client/server computing paradigm. A mobile agent is essentially a computer program that acts autonomously on

EPFL2002

FATOMAS - A Fault-Tolerant Mobile Agent System Based on the Agent-Dependent Approach

André Schiper, Stefan Pleisch

Fault tolerance is fundamental to the further development of mobile agent applications. In the context of mobile agents, fault-tolerance prevents a partial or complete loss of the agent, i.e., it ensu

IEEE Computer Society2001

Fault-tolerance is fundamental to the further development of mobile agent applications. In the context of mobile agents, fault-tolerance prevents a partial or complete loss of the agent, i.e., ensures

IEEE Computer Society2000