E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Press, 1988.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....detect all differences among agents, but only the ones that may prevent agents from achieving their goals concurrently. In addition, disparities among agents do not necessarily cause conflicts; different viewpoints can generate alternative solutions and contribute to problem solving in the system [7]. In the past two decades, researchers have developed various conflict resolution strategies for multi agent systems. Some common conflict resolution strategies include negotiation[8] arbitration [9] priority conventions [10] voting [11] and self modification [5] Previous research provides a ....

E. H. Durfee, Coordination of Distributed Problem Solvers . Boston: Kluwer Academic, 1988.

....designers have found compelling reasons to consider distributed AI solutions. Suitability of the domain might involve a natural geographic distribution in the sources of incoming data (so, for example, much research has focused on distributed systems of sensors carrying out cooperative data fusion [10, 14]) or a natural functional distribution best addressed through modular problem solvers (such as, for example, the modules at work in the Pilot s Associate project [80] All this work on cooperative problem solvers arises as designers try to figure out the most effective way of dealing with ....

....is to have some hierarchy of coordinating agents, such that each agent is responsible for the coordination of those who are below it in the hierarchy. Coordination is then done through some communication process. One approach that uses this hierarchical technique is that of Partial Global Plans [14, 13]. Within this framework, the group s activity is modeled as a network and there is a distinction between three hierarchical types of plans (information nodes) Climbing the hierarchy, each node has a more global and long term perspective on the multiagent activity. Some other approaches allow the ....

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Edmund H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988.

....of this information to get synchronized from time to time, but they cannot assume that communication is free and information can be exchanged at each moment. Most current systems rely on ad hoc heuristics (e.g. 8] or they rely on the assumption that knowledge can be shared constantly (e.g. [4, 10, 5]) Xuan et al. 18] address the problem of combining communication acts into the decision problem of a group of cooperative agents. Their framework is similar to ours but their approach is heuristic. We are interested in the most comprehensive case where cooperative agents must determine which ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988.

....airline cannot nd a gate for it. For many purposes, this intuitive meaning is sucient. However, in trying to characterize in a formal way the behavior of certain computable agents willing to coordinate, it is sometimes important to have a more precise idea of what we mean by coordination. Dur88, MC94, MO99, RZ94] and, more recently, CJ02, Sessions 11A and 9B] list a number of de nitions that have been suggested for this term. For our purposes here, however, it is useful to begin with the following simple de nition. 2) Coordination is managing dependencies between activities in a ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, MA, 1988.

....sequences of communication acts that guarantee that no event will fail. Just as George , Stuart focuses on the resolution of con icts, and not on potential positive relations between plans. Our framework can also be compared with the PGP (Partial Global Plan) framework described by Durfee et al. [9, 8]) and Decker and Lesser ( 7] In this PGP framework and its extension GPGP, agents are allowed to cooperate by exchanging parts of their local plans to develop common plans. The main di erence with our approach to cooperation is that in our framework exchanging parts of local plans is more ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer, 1988.

....the agent must decide whether the shop state has changed enough to warrant reprediction of the shop s future. If reprediction occurs, time trees are constructed and communicated to each processor agent in the SP agent s group. Strong analogies exist here with Durfee s Partial Global Planning (PGP) [Dur88], DL91] where partial global plans are exchanged between agents which are based on incomplete environment information. PGP facilitates the interleaving of action and planning in a manner akin to that desired within the ABACUS system. The exchange of such plans enable other agents to reason about ....

Durfee, E. H., Coordination of Distributed Problem Solvers, Kluwer Academic Press, Boston, 1988.

....airline cannot nd a gate for it. For many purposes, this intuitive meaning is sucient. However, in trying to characterize in a formal way the behavior of certain computable agents willing to coordinate, it is sometimes important to have a more precise idea of what we mean by coordination. Dur88, MC94, MO99, RZ94] and, more recently, CJ02, Sessions 11A and 9B] list a number of de nitions that have been suggested for this term. For our purposes here, however, it is useful to begin with the following simple de nition. 2) Coordination is managing dependencies between activities in a ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, MA, 1988.

....drawn to a particular solution. Standard representation techniques (e.g. classical logic, game theory) are unsuitable for focal point search, either because they abstract away context or because they do not capture the difficulty of finding solutions. See for example, Smith and Davis, 1981, Durfee, 1988, Bond and Gasser, 1988, Sycara, 1990, Lesser, 1991, Kraus et al. 1995, Rosenschein and Zlotkin, 1994, Jennings, 1995] 7.1 The Focal Point Concept Originally introduced by Schelling [ Schelling, 1963, Rasmusen, 1989 ] focal points refer to prominent solutions of an interaction, solutions to ....

Edmund H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988.

....is, the layout of information and control relationship existing among agents. Some systems created following these directive ideas are due to the works of Galbraith [15] 16] Gasser [18] Durfee, Lesser and Corkill [12] g) Partial Global Planning In the model, developed by Durfee and Lesser [10], 11] each agent can reason about implications of its actions on other agents state (i.e. on their goals, plans, beliefs) This reasoning ability is the basis to decide how to coordinate with others. 2.2 Logical Models of Agents for DPS Systems Logical approaches to DPS are systems that ....

E. H. Durfee, "Coordination of Distributed Problem Solvers", Boston, Kluwer Academic, 1988

....next actions to perform. Each agent has a symbolic representation of the state of the external environment. Moreover, UMPRS enables an agent to infer the goals and the plans of other agents, by means of techniques of plan recognition and of reasoning about implications of actions on other agents [47, 48]. Concordia [125] is a framework for developing and executing highly mobile software agents and multiagent systems. Concordia extends Java; in fact a Concordia agent is an object instanced from an extended Java [63] class that inherits features from ancestor predefined classes. Concordia is based ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic, Boston, USA, 1988.

....by the agent from the other agents, the management and access of this information, how much information are sent in the queries for services to the agent or the capability of the agents to act as a gateway between requester and provider. Numerous researches are studying negotiation protocols [9] [5], 15] as mechanism of coordination. Negotiation among agents is important in agreeing details of terms and conditions of contracts among buyers and sellers as well as re negotiating these in the case of changes in the environment (service failures, SLA violations, etc. In some cases another ....

Durfee E. H. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988.

....protocols specified in advance by the system designer. Therefore each agent has little knowledge of the system s overall objective or of general strategies for communication and coordination. In other approaches, the main focus is on coordination strategies between multiple decision makers [15, 32, 34, 37, 78, 79]. Consequently, the mental apparatus and inferential mechanisms of agents are obscured under the mere assumption that agents have their own decision making expertise which frequently has to be coordinated when the goals undertaken by individual agents are related. This definition encapsulates the ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, MA, 1988.

....knowledge of the system s overall objective or of This definition encapsulates the notion of practical reasoning analysed in [3] and [24] general strategies for communication and coordination. In other approaches, the main focus is on coordination strategies between multiple decision makers [15, 32, 34, 78, 79]. Consequently, the mental apparatus and inferential mechanisms of agents are obscured under the mere assumption that agents have their own decision making expertise which frequently has to be coordinated when the goals undertaken by individual agents are related. However, in the majority of ....

E.H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988.

....[3] Although the term architecture is not used, its notion is addressed. Approaching the issue of architecture from an AI, or better, from a Distributed AI point of view, one will find many results and ideas about cooperation, coordination, organization and agent ar chitectures in books like [4] and It0] It is, however, beyond the scope of this report to distill the common, that is, the domain independent features from these sources and to discuss them in the light of the Flip Tick Architecture. Finally, a remark on terminology seems appropriate. Whether the basic functional units are ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988. 269 pages.

....protocols specified in advance by the system designer. Therefore each agent has little knowledge of the system s overall objective or of general strategies for communication and coordination. In other approaches, the main focus is on coordination strategies between multiple decision makers [15, 32, 34, 37, 78, 79]. Consequently, the mental apparatus and inferential mechanisms of agents are obscured under the mere assumption that agents have their own decision making expertise which frequently has to be coordinated when the goals undertaken by individual agents are related. This definition encapsulates the ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, MA, 1988.

....to plan its actions, and to represent and communicate with other agents. The archon technology has subsequently been deployed in several other domains, including particle accelerator control. Distributed sensing. The classic application of multi agent technology was in distributed sensing [32, 11]. The broad idea is to have a system constructed as a network of spatially distributed sensors. The sensors may, for example, be acoustic sensors on a battlefield, or radars distributed across some airspace. The global goal of the system is to monitor and track all vehicles that pass within range ....

E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers: Boston, MA, 1988.

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E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Press, 1988.

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E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, MA, 1988.

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E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Press, 1988.

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H.E. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Press, 1988.

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E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Press, 1988.

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E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, MA, 1988.

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E. H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, MA, 1988.

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Edmund H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988.

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Edmund H. Durfee. Coordination of Distributed Problem Solvers. Kluwer Academic Publishers, Boston, 1988.

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