Proceedings. IEEE/WIC/ACM International Conference on Intelligent Agent Technology, 2004. (IAT 2004).

20-24 Sept. 2004

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Displaying Results 1 - 25 of 123
  • Traffic jams: an evolutionary investigation

    Publication Year: 2004, Page(s):381 - 384
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    Traffic at the rush hours is a big problem in every city so that city councils try to encourage citizens to choose mass transportation instead of driving cars. However, this effort is counterbalanced by the fact that travelers' utilities from car usage are more than those from taking buses in most cases. We build a traffic problem model with many agents who have the two options of choosing the car... View full abstract»

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  • Analysis of mobile agents' fault-tolerant behavior

    Publication Year: 2004, Page(s):377 - 380
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (429 KB) | HTML iconHTML

    As mobile agents are the medium for implementing various executions, their behaviors are paramount for network performance. Clearly, one of the pivotal tasks ahead, if mobile agents are to have significant impact, is to explore quantitative studies on the behaviors of mobile agents, which can reveal the inherence of the mobile agent approach and ultimately guide future research. This issue, unlike... View full abstract»

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  • A new agent-oriented development methodology

    Publication Year: 2004, Page(s):373 - 376
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB) | HTML iconHTML

    This work proposes a new agent-oriented development methodology to tackle complex systems. The methodology highlights the three perspectives of multi-agent system architecture. It extends and rationalises the conventional agent-oriented developments. Development steps of this new methodology follow a linear life cycle in detail. A multi-agent system for a community surgery is studied to illustrate... View full abstract»

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  • Programming mobile intelligent agents: an operational semantics

    Publication Year: 2004, Page(s):65 - 71
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (385 KB) | HTML iconHTML

    This work presents the operational semantics of an agent oriented programming language called CLAIM. CLAIM allows the design of multiagent systems that support both stationary and mobile agents. Agents designed using CLAIM are endowed with cognitive capabilities, are able to communicate with other agents and are mobile. The primitives of mobility are inspired from the ambient calculus. The operati... View full abstract»

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  • From local behaviors to global performance in a multi-agent system

    Publication Year: 2004, Page(s):309 - 315
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (313 KB) | HTML iconHTML

    We show our current work on the relationships between local behaviors of agents and global performance of multi-agent systems. We conduct our experiments on RoboNBA, which is a multi-agent system testbed. Local behaviors and global performance in RoboNBA are introduced. In addition, we address the problem of how to quantitatively measure the global performance in RoboNBA. Through experiments and a... View full abstract»

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  • A novel self-configuration mechanism for heterogeneous P2P networks

    Publication Year: 2004, Page(s):281 - 287
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (287 KB) | HTML iconHTML

    We propose a simple and efficient mechanism to self-configure semi-structured overlay networks for heterogeneous peer-to-peer systems with no global knowledge. The overlay network is constructed as a hierarchical graph based on peer power which is an aggregate measure of available resources. We use index based, random walk JOIN and LEAVE protocols to build the overlay network in which node degree ... View full abstract»

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  • A comparison of team evolution operators

    Publication Year: 2004, Page(s):369 - 372
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (249 KB) | HTML iconHTML

    One of the main research topics in multi-agent systems is learning cooperation among agents. In the MARLBS system, we use genetic algorithms to evolve neural networks, which enhances the cooperation between agents. In this paper, we examine several evolutionary operators to evolve a team, in which team members cooperate with each other to solve problems. The best operators found from experiments e... View full abstract»

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  • Mechanism design for multi-agent meeting scheduling including time preferences, availability, and value of presence

    Publication Year: 2004, Page(s):253 - 259
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB) | HTML iconHTML

    We examine the benefits and limitations of mechanism design as it applies to multi-agent meeting scheduling. We look at the problem of scheduling multiple meetings between various groups of agents that arise over time. Each of the agents has private information regarding their tune preferences for meetings. Our aim is to extract this information and assign the meetings to times in a way that maxim... View full abstract»

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  • A time stamp control strategy for CBR based reactive navigation in dynamic environments with priorities

    Publication Year: 2004, Page(s):58 - 64
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1233 KB) | HTML iconHTML

    This work presents a CBR based reactive navigation system for autonomous robots. The main advantage of the proposed system is that it learns by experience how to deal with unexpected situations in dynamic environments. A time stamp control method has been included to deal with mobile obstacles in intersections, where there are priorities depending on the relative positions of those obstacles and t... View full abstract»

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  • Multiagent technologies for steel production and control

    Publication Year: 2004, Page(s):555 - 558
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1742 KB) | HTML iconHTML

    Flexible planning and realisation as well as fast reorganisation after interferences during continuous work are indispensable requirements for a competitive position on the market in the industrial sector. We present an agent-based generic solution for the planning and observation inside the steelwork "Volklingen" of the German steel company "Saarstahl AG", a global respected steel manufacturer. F... View full abstract»

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  • ATSpace: a middle agent to support application oriented matchmaking and brokering services

    Publication Year: 2004, Page(s):393 - 396
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (255 KB) | HTML iconHTML

    An important problem for agents in open multiagent systems is how to find agents that match certain criteria. A number of middle agent services - such as matchmaking and brokering services - have been proposed to address this problem. However, the search capabilities of such services are relatively limited since the match criteria they use are relatively inflexible. We propose ATSpace, a model to ... View full abstract»

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  • Situation awareness in intelligent agents: foundations for a theory of proactive agent behavior

    Publication Year: 2004, Page(s):86 - 92
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB) | HTML iconHTML

    This work outlines a computational model of situation awareness. This model serves two purposes. First, it provides a detailed description for our everyday notion of situation awareness. Second, it offers an alternative perspective of looking into the nature and characteristics of proactive behavior in intelligent agent systems. Most of the existing definitions of proactiveness do not possess the ... View full abstract»

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  • Theoretical analysis of the multi-agent patrolling problem

    Publication Year: 2004, Page(s):302 - 308
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (559 KB) | HTML iconHTML

    A group of agents can be used to perform patrolling tasks in a variety of domains ranging from computer network administration to computer wargame simulations. The multi-agent patrolling problem has recently received growing attention from the multi-agent community, due to the wide range of potential applications. Many algorithms based on reactive and cognitive architectures have been developed, g... View full abstract»

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  • Economic model of TAC SCM game

    Publication Year: 2004, Page(s):273 - 280
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (377 KB) | HTML iconHTML

    This work presents an economic model to the problem of supply chain management in trading agent competition (TAC SCM). The TAC SCM marketplace is characterized by the combination of quantity competition and price competition between manufacturers (agents). We specify the quantity competition by a variation of Cournot model and view the price competition as an extension of Bertrand game. An approac... View full abstract»

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  • Agent dynamic cooperation based information retrieval

    Publication Year: 2004, Page(s):365 - 368
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (270 KB) | HTML iconHTML

    We propose a dynamic cooperation model for different agents' message exchanging. Besides, we propose a new algorithm, which makes it easy to transform a traditional Boolean logical query statement into a matrix. This method allows a document might be retrieved in a clear Boolean view even it matches the query partially. On the base of them, we implement an agent-based selective information retriev... View full abstract»

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  • A practical approach to agent migration protocol

    Publication Year: 2004, Page(s):337 - 340
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB) | HTML iconHTML

    As the primary identifying characteristic of a mobile agent is its ability to migrate from host to host, a protocol to support agent mobility is a fundamental requirement of a mobile agent system. This work presents a novel agent migration protocol developed in the IMAGO system. The IMAGO (intelligent mobile agent gliding on-line) system is an infrastructure for prolog based, mobile agent applicat... View full abstract»

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  • Multi-agent systems: a Petri net with objects based approach

    Publication Year: 2004, Page(s):429 - 432
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    Most of time, an agent theory is expressed by modal logic which is a good specification tool since it eases the description of intentional agents. However, this formalism cannot be easily refined into implementation even if some counter-examples exist. This work proposes another type of formalism called cooperative objects which are based on Petri nets and objects. We show how it may be used with ... View full abstract»

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  • Power and dependence relations in groups of agents

    Publication Year: 2004, Page(s):246 - 252
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (294 KB) | HTML iconHTML

    We present a formal model of multiagent systems to analyze the relations of power and dependence underlying group behaviors such as cooperation. Inspired by the work of Castelfranchi we define these relations by means of a description of goals and skills of single agents. We show how our framework can be used to describe social and organizational structures as emergent properties of a collection o... View full abstract»

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  • Holonic probabilistic agent merging algorithm

    Publication Year: 2004, Page(s):409 - 412
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB) | HTML iconHTML

    Data mining global models of complex domains is often difficult - a lot of methods are NP-hard as stated in D. M. Chickering et al. (1994) - and the resulting models either lack of details or are far too complex to work with them. In our case we were challenged with the task to model the shopping behavior of customers and the sales behaviour of items within a real supermarket store in order to for... View full abstract»

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  • Speculative computation with deadline and its resource negotiation under time constraints

    Publication Year: 2004, Page(s):353 - 356
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (259 KB) | HTML iconHTML

    Speculative computation is based on abduction, and it can give result of decision in advance based on defaults under incomplete resource information. To achieve goals and reduce risks of decision, master agent in speculative computation makes efforts to obtain more information via negotiation. However, the speculative computation and negotiation have usually deadlines. In This work, framework exte... View full abstract»

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  • Organization-based cooperative coalition formation

    Publication Year: 2004, Page(s):162 - 168
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (403 KB) | HTML iconHTML

    The coalition formation problem has received a considerable amount of attention in recent years. In this work we present a novel distributed algorithm that returns a solution in polynomial time and the quality of the returned solution increases as agents gain more experience. Our solution utilizes an underlying organization to guide the coalition formation process. We use reinforcement learning te... View full abstract»

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  • Intelligent pedagogical agents with multiparty interaction support

    Publication Year: 2004, Page(s):134 - 140
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (290 KB) | HTML iconHTML

    Most current virtual world systems focus on the interaction between a single agent and the user. This simplification does not reflect the richness of a real social environment. The quantitative increment from the simple two-party interaction to a multi-party interaction does not merely increase the difficulty linearly. In fact, it leads to a much more complex situation involving multimodal communi... View full abstract»

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  • An integral cycle for building feasible multi-agent plans

    Publication Year: 2004, Page(s):211 - 217
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (327 KB) | HTML iconHTML

    This work proposes a multi-agent planning framework. It presents an integral cycle we developed to build feasible multi-agent plans in a dynamic context (i.e. aircraft simulation). This cycle takes into account both functional and computational features of our multi-agent planning framework. From modeling to validation, this cycle allows the management of different constraints (e.g. time, physical... View full abstract»

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  • A resource discovery model based on multi-agent technology in P2P system

    Publication Year: 2004, Page(s):548 - 551
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (249 KB) | HTML iconHTML

    Dynamic joins and leaves of the node and heterogeneous network structure in a P2P system make it difficult to discover shared resources. A resource discovery model based on multiagent technology is presented. Agents maintain local resource information and mobile agents migrate on the network to discover shared resources. Multiagents cooperate with each other by means of pheromone and local heurist... View full abstract»

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  • Agent space architecture for search engines

    Publication Year: 2004, Page(s):521 - 525
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    The future of computing is moving from individual processing units to communities of self organizing agents. In This work we propose an agent and network based architecture for parallel and distributed computing called agent space architecture. Our architecture builds upon the notions of agent and object space and utilizes multicast networks. The building blocks for our proposed architecture consi... View full abstract»

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