Parunak, H., Brueckner, S., Sauter, J.: ERIM's Approach to Fine-Grained Agents. In: In Proceedings of NASA/JPL Workshop on Radical Agent Concepts (WRAC'02). (2002) (available at http://www.erim.org/vparunak/.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....characteristics also imply that agents activities are automatically adapted to the environmental dynamics, reflected in the changed view of the environment, without forcing agents to re adapt themselves. All of this means that the approach we propose is based on a design as a whole perspective [16], in which agents are not designed in isolation, but as part of a global organization. Following this approach, agents achieve their goal not because of their capabilities as single individuals, but because they are part of an (auto)organized system that leads them to the goal achievement. The ....

H. V. Parunak, S. Brueckner, J Sauter, "ERIM's Approach to Fine-Grained Agents", NASA Workshop on Radical Agent Concepts, Greenbelt, MD, USA, Jan. 2002.

....reciprocal knowledge, they may be thereafter forced to interact in a direct way to coordinate their activities with each other. Anthill [BabM02] is a framework built to support design and development of adaptive peer to peer applications, that exploits an analogy with biological adaptive systems [Bon99, ParBS02]. Anthill consists of a dynamic network of peer nodes, each one provided with a local tuple space ( nest ) in which distributed mobile components ( ants ) can travel and can indirectly interact and cooperate with each other by leaving and retrieving tuples in the distributed tuple spaces. The key ....

V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to Fine-Grained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Jan. 2002.

.... in the popular simulation game The Sims [Sims] characters move and act accordingly to specific fields that are assumed to be spread in the simulated environment and sensed by characters depending on situations (e.g. they sense the food field when hungry) iii) ant based optimization systems [Bon99, ParBS02] exploit a virtual environment in which ants can spread pheromones, diffusing and evaporating in the environment according to specific rules. iv) amorphous computers [But02, Nag02] exploit propagation of fields to let particles self organize their activities. Although serving different purposes, ....

V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to Fine-Grained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Jan. 2002.

....environments, while robustness endows the colony with the ability to function even though some individuals fail to perform their task. Looking at today software system s brittleness and fragility there is no surprise that these features attract more and more software engineering researchers [ParB02]. Following other authors [BonT00] we will refer to those kind of systems as swarm intelligent systems, to stress on the fact that their features and capabilities are not embedded in the single components of the system, but emerge by the coordinated activities of a swarm of individuals. The ....

.... a modeling framework to design a multi agent system (MAS) Its primary focus is to consider and model the MAS as a whole , in which agents achieve their goal not because of their single capabilities, but because they are part of an (auto)organized system that leads them to the goal achievement [ParB02]; the fact that the goals are accomplished is not a merit of the single agents, but of the system as a whole. The Co Fields model can be schematized in the following four points: 1. The environment is represented and abstracted by fields, spread by agents and by the environment itself. These ....

H. V. Parunak, S. Brueckner, J Sauter, "ERIM's Approach to Fine-Grained Agents", NASA Workshop on Radical Agent Concepts, Greenbelt, MD, USA, Jan. 2002.

....4.2 Defending from Environmental Dynamics The reported experiments open up the possibility that a software system immersed in a dynamic environment may exhibit behaviors very different from the ones it was programmed for. Of course, this is not desirable and may cause highly damaging effects [ParBS01]. For instance, in the case of a computational Internet pricing system, the emergence of macro level spatial patterns may produce great price differences in different sites of the planet. In the case of information retrieval applications, this may cause a large amount of available information to ....

.... However, till now, ant based systems researches have focused on the possibility of designing the environment and its dynamics to constructively exploit it, and few researchers focused on the perturbing effects that uncontrollable environmental dynamic can have on the global behavior of a system [ParBS01]. 6 CONCLUSIONS AND FUTURE WORKS This paper has reported the outcomes of a set of experiments performed on a new class of cellular automata, DCA, which are open to the environment and can be perturbed by its dynamics. This experiments have shown that the perturbation makes largescale ....

V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to Fine-Grained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Sept. 2001.

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V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to FineGrained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Jan. 2002.

.... and computer supported collaborative work are built around shared data space abstractions as the common execution environment for workflow processes and agents [Tol00] Finally, several promising proposals in distributed problem solving and optimization (i.e. works on ant based colonies [ParB01, ParBS02]) exploit a dynamic virtual environment influencing the activities of distributed problem solver processes. 2.2 Openness Living in an environment, perceiving it, and being affected by it intrinsically imply openness. The software system is no longer isolated, but becomes a permeable subsystem, ....

.... dynamic Web access patterns emerge [CroB96] and traditional reliability models fall short due to the specific emergent characteristics of Web and P2P networks [AlbJB00, RipIF02] Some approaches to model and describe software systems in terms of thermodynamic systems have already been proposed [ParB01, ParBS02]. The ideas behind such research are twofold: to provide synthetic indicators capable of measuring how closely the system is approaching the desired behavior, and to provide tools to measure the influence of the environmental dynamics on the system. To some extent, a similar approach has been ....

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V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to Fine-Grained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Jan. 2002.

....tools for their description [CroB96] For instance, it has been shown that traditional Web caching policies are no longer effective when peculiar dynamic Web access patterns emerge. Some approaches to model and describe software systems in terms of thermodynamic systems have already been proposed [ParB01, ParBS02]. The ideas behind such research are twofold: to provide synthetic indicators capable of measuring how closely the system is approaching the desired behavior, and to provide tools to measure the influence of the environmental dynamics on the system. To some extent, a similar approach has been ....

....that can somehow be damaging to the global behavior of a system. On the other hand, the design could also assume an offensive approach, by considering openness and environmental dynamics as additional design dimensions to be exploited with the possibility of improving the behavior of the system [ParBS02]. Again, it is possible to identify a few exemplar works that are already adopting such a novel software engineering perspective. In the area of distributed operating systems management, policies for the management of distributed resources are already being designed in terms of autonomous ....

V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to Fine-Grained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Jan. 2002.

....two main approaches to defining the internal logic of an agent. Behavioristic agents are black boxes, defined only by their outward behavior, and their internal programming makes no claims to imitate the detailed functioning of cognition. Such agents are inspired by much work in artificial life [27]. Cognitive agents, as in the SOAR [23] or BDI [30] architectures, seek to imitate the representations and processes of human cognition. To determine whether agents are Cooperating or Contending, we must look inside them. For example, traders in a commodity market exhibit a high degree of ....

H. V. D. Parunak, S. Brueckner, and J. Sauter. ERIM's Approach to Fine-Grained Agents. In Proceedings of NASA/JPL Workshop on Radical Agent Concepts (WRAC'

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Parunak, H., Brueckner, S., Sauter, J.: ERIM's Approach to Fine-Grained Agents. In: In Proceedings of NASA/JPL Workshop on Radical Agent Concepts (WRAC'02). (2002) (available at http://www.erim.org/vparunak/.

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Parunak, H., Brueckner, S., Sauter, J.: ERIM's Approach to Fine-Grained Agents. In: In Proceedings of NASA/JPL Workshop on Radical Agent Concepts (WRAC'02). (2002) (available at http://www.erim.org/vparunak/.

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H. V. Parunak, S. Brueckner, J Sauter, "ERIM's Approach to Fine-Grained Agents", NASA Workshop on Radical Agent Concepts, Greenbelt, MD, USA, Jan. 2002. 18

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V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to Fine-Grained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Jan. 2002.

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V. Parunak, S. Bruekner, J. Sauter, "ERIM's Approach to Fine-Grained Agents", NASA/JPL Workshop on Radical Agent Concepts, Greenbelt (MD), Jan. 2002.

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H. V. Parunak, S. Brueckner, J Sauter, "ERIM's Approach to Fine-Grained Agents", NASA Workshop on Radical Agent Concepts, Greenbelt, MD, USA, Jan. 2002.

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