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1.
为增强多智能体系统中联盟成员效用划分的合理性,促使agent形成稳定的全局最优联盟,提出了一种基于忠诚度的多智能体联盟效用分配策略。新策略引入agent忠诚度的概念,根据agent每次参与联盟后是否服务到任务结束来对agent忠诚度进行评价,从而表示各agent的忠诚度大小,将忠诚度与各agent完成任务的能力相结合,共同决定联盟内各agent效用如何划分。理论分析和实验表明,新策略提高了对联盟效用分配的合理性,较好地满足了联盟形成机制的全局最优性、强稳定性、时效性、简单性等要求。  相似文献   

2.
本文针对现代制造业的经营策略和需求不断动态变化的情况,时现代虚拟企业提出了基于Internet的多agent智能制造系统的解决方案.主要内容包括基于Internet的IMS控制结构的建立、有关agent的层次划分,智能制造系统的构成框架以及具体智能agent单元任务分解与结点建立.  相似文献   

3.
多agent环境下agent的最优策略取决于其它agent的策略,这使得学习目标不易被清晰定义.基于客观观察行为建模的方法并不能很好体现智能体的个体理性.本文提出基于内省推理方法的多智能体环境下智能体高效在线学习方法,将基于对手模型的客观观察行为与基于换位思考推理的主观意图推测结合起来,智能体通过内省推理能够更多地得到对手的信息.针对经典协调博弈进行仿真实验,结果表明能取得较好的协调性能.  相似文献   

4.
在多智能体系统MAS中,自治的agent在完成任务时常常会出现任务重叠的“正交互”现象,从而使得系统效率低下。为了解决这一问题,文章提出了一种agent协作机制,采用最短路径的方法来找出agent最优的合作对象,优化整个系统处理问题的能力。实验证明该方法是有效的。  相似文献   

5.
胡志刚  Wilson  乔喆  钟掘 《计算机工程》2002,28(4):34-35,72
着重介绍了多智能体系统开发平台支撑模块中地址服务器和分布式管理者的设计与实现。地址服务器是1个由集成开发环境维护的“智能体关系图”,该图中包含了智能体的名称、IP地址、通信端口等;分布式管理者是1个进程,它用于帮助集成开发环境管理和启动位于网络中其它结点上的智能体。  相似文献   

6.
基于多智能agent的敏捷供应链   总被引:10,自引:0,他引:10  
论述了敏捷供应链概念和特点,指出敏捷供应链是以动态联盟为基础的敏捷制造的关键技术之一。敏捷供应链作为一个典型的分布式系统,该文采用多智能agent系统建立敏捷供应链系统的框架,并对通用智能agent的结构、功能以及智能agent之间协作与通讯进行了研究。  相似文献   

7.
泛洪算法是分布式网络中的传统资源发现算法,但被应用于移动网络中时,该算法并不能保证所有的结点都能发现其他结点的资源,本文将移动agent和改进的泛洪算法结合,使用移动agent完成网络结点间的资源信息交换,提出了一种新的资源发现算法:双向反馈算法(DDF)。通过对DDF的性能分析证明,移动agent的应用和泛洪算法的改进使DDF比传统的泛洪算法收敛得更快,并能较好地适应移动网络环境。  相似文献   

8.
寻找多智能体系统一致性的迭代学习方法   总被引:2,自引:0,他引:2  
本文利用迭代学习的方法研究了带头结点的多智能体系统的一致性问题.文中分别对单积分多智能体系统和一般的线性多智能体系统提出了迭代学习型的一致性算法.该算法对每一个从节点所设计的分布迭代学习序列可以保证从节点能完全跟随上头结点.假设头结点是全局可达的,对于有向拓扑连接图,给出了智能体达到完全一致的充分条件.最后,仿真实例说明了文中所给方法的有效性.  相似文献   

9.
随着多智能体系统MAS的迅猛发展,常常需要进行在线的协商。然而由于协商中不完全信息的存在,常常会大大影响协商的效果。该文提出一种多智能体协商中的动态在线增量学习算法,采用Q-学习机制来学习agent协商中的不完全信息。该文将这种学习算法应用基于智能体agent的电子商务中。实验证明算法可以加速协商的过程,提高协商的效果。  相似文献   

10.
消极情感对agent劝说的影响研究*   总被引:1,自引:0,他引:1  
由于agent的非人工智能特性,使其在模拟人类劝说的过程中经常会陷入僵局,影响合作。为解决该问题,结合其作为人工智能工具的情感特性,对agent劝说中的情感进行了分类;运用形势逻辑理论,构建了agent劝说中的消极情感影响模型,并举例阐述;基于该模型,在提出agent劝说的消极情感变化度的概念后,给出了相应的比较方法,并通过算例进行了验证。与已有研究相比,该研究能更进一步发挥agent的理性优势,减轻系统负担,同时促进agent之间更好地合作。  相似文献   

11.
Today's service-oriented systems realize many ideas from the research conducted a decade or so ago in multiagent systems. Because these two fields are so deeply connected, further advances in multiagent systems could feed into tomorrow's successful service-oriented computing approaches. This article describes a 15-year roadmap for service-oriented multiagent system research.  相似文献   

12.
The increasing demand for mobility in our society poses various challenges to traffic engineering, computer science in general, and artificial intelligence and multiagent systems in particular. As it is often the case, it is not possible to provide additional capacity, so that a more efficient use of the available transportation infrastructure is necessary. This relates closely to multiagent systems as many problems in traffic management and control are inherently distributed. Also, many actors in a transportation system fit very well the concept of autonomous agents: the driver, the pedestrian, the traffic expert; in some cases, also the intersection and the traffic signal controller can be regarded as an autonomous agent. However, the “agentification” of a transportation system is associated with some challenging issues: the number of agents is high, typically agents are highly adaptive, they react to changes in the environment at individual level but cause an unpredictable collective pattern, and act in a highly coupled environment. Therefore, this domain poses many challenges for standard techniques from multiagent systems such as coordination and learning. This paper has two main objectives: (i) to present problems, methods, approaches and practices in traffic engineering (especially regarding traffic signal control); and (ii) to highlight open problems and challenges so that future research in multiagent systems can address them.  相似文献   

13.
Agent's flexibility and autonomy, as well as their capacity to coordinate and cooperate, are some of the features which make multiagent systems useful to work in dynamic and distributed environments. These key features are directly related to the way in which agents communicate and perceive each other, as well as their environment and surrounding conditions. Traditionally, this has been accomplished by means of message exchange or by using blackboard systems. These traditional methods have the advantages of being easy to implement and well supported by multiagent platforms; however, their main disadvantage is that the amount of social knowledge in the system directly depends on every agent actively informing of what it is doing, thinking, perceiving, etc. There are domains, for example those where social knowledge depends on highly distributed pieces of data provided by many different agents, in which such traditional methods can produce a great deal of overhead, hence reducing the scalability, efficiency and flexibility of the multiagent system. This work proposes the use of event tracing in multiagent systems, as an indirect interaction and coordination mechanism to improve the amount and quality of the information that agents can perceive from both their physical and social environment, in order to fulfill their goals more efficiently. In order to do so, this work presents an abstract model of a tracing system and an architectural design of such model, which can be incorporated to a typical multiagent platform.  相似文献   

14.

This article describes a multiagent system architecture to increase the value of 24-hour-a day call center service. This system supports call centers in making appointments with clients on the basis ofknowledge ofemployees and their schedules. Relevant activities are scheduled for employees in preparation ofsuch appointments. The multiagent system architecture is based on principled design, using the compositional development method for multiagent systems DESIRE. To schedule procedures in which more than one employee is involved, each employee is represented by its own personal assistant agent, and a work manager agent coordinates the schedules of the personal assistant agents and clients through the call center. The multiagent system architecture has been applied to the banking domain, in cooperation with and partially funded by the Rabobank.  相似文献   

15.
There are numerous applications where a variety of human and software participants interactively pursue a given task (play a game, engage in a simulation, etc.). In this paper, we define a basic architecture for a distributed, interactive system (DIS for short). We then formally define a mathematical construct called a DIS abstraction that provides a theoretical basis for a software platform for building distributed interactive systems. Our framework provides a language for building multiagent applications where each agent has its own behaviors and where the behavior of the multiagent application as a whole is governed by one or more “master” agents. Agents in such a multiagent application may compete for resources, may attempt to take actions based on incorrect beliefs, may attempt to take actions that conflict with actions being concurrently attempted by other agents, and so on. Master agents mediate such conflicts. Our language for building agents (ordinary and master) depends critically on a notion called a “generalized constraint” that we define. All agents attempt to optimize an objective function while satisfying such generalized constraints that the agent is bound to preserve. We develop several algorithms to determine how an agent satisfies its generalized constraints in response to events in the multiagent application. We experimentally evaluate these algorithms in an attempt to understand their advantages and disadvantages. This revised version was published online in June 2006 with corrections to the Cover Date.  相似文献   

16.
Environment as a first class abstraction in multiagent systems   总被引:2,自引:1,他引:1  
The current practice in multiagent systems typically associates the environment with resources that are external to agents and their communication infrastructure. Advanced uses of the environment include infrastructures for indirect coordination, such as digital pheromones, or support for governed interaction in electronic institutions. Yet, in general, the notion of environment is not well defined. Functionalities of the environment are often dealt with implicitly or in an ad hoc manner. This is not only poor engineering practice, it also hinders engineers to exploit the full potential of the environment in multiagent systems. In this paper, we put forward the environment as an explicit part of multiagent systems.We give a definition stating that the environment in a multiagent system is a first-class abstraction with dual roles: (1) the environment provides the surrounding conditions for agents to exist, which implies that the environment is an essential part of every multiagent system, and (2) the environment provides an exploitable design abstraction for building multiagent system applications. We discuss the responsibilities of such an environment in multiagent systems and we present a reference model for the environment that can serve as a basis for environment engineering. To illustrate the power of the environment as a design abstraction, we show how the environment is successfully exploited in a real world application. Considering the environment as a first-class abstraction in multiagent systems opens up new horizons for research and development in multiagent systems.  相似文献   

17.
There are several problems in searching the database of an existing digital library. To overcome some problems, I propose a new platform of mobile multiagents for a personal digital library. To develop a new platform, I propose a distributed mobile multiagent framework (DMMAF) agent. For the higher relationships among searched documents from mobile servers, an unsupervized neural network is applied. For the user's preference, some modular clients are applied to a neural network. A multiagent platform and a mobile agent platform are combined to develop a new mobile multiagent platform so as to decrease the network burden. A new negotiation algorithm and a scheduling algorithm are also activated for the effectiveness of the personal digital library system (PDLS). PDLS is a more intelligent system capable of establishing a database in the computer by learning the interests of users. We tried to set up the theoretical structure of the multimobile agents, and develop an algorithm for a modified intelligent negotiation agent for inducing interaction among multiagents. This work was presented in part at the 11th International Symposium on Artificial Life and Robotics, Oita, Japan, January 23–25, 2006  相似文献   

18.
19.

Visualizing the behavior of systems with distributed data, control, and process is a notoriously difficult task. Each component in the distributed system has only a local view of the whole setup, and the onus is on the user to integrate, into a coherent whole, the large amounts of limited information they provide. In this article, we describe an architecture and an implemented system for visualizing and controlling distributed multiagent applications. The system comprises a suite of tools, with each tool providing a different perspective of the application being visualized . Each tool interrogates the components of the distributed application, collates the returned information, and presents this information to users in an appropriate manner. This in essence, shifts the burden ofinference from the user to the visualizer. Our visualizer has been evaluated on four distributed multiagent systems: a travel management application, a telecommunications network management application, a business process management demonstrator, and an electronic commerce application. Lastly, we briefly show how the suite of tools can be used together for debugging multiagent applications - a process we refer to as debugging via corroboration.  相似文献   

20.
多智能体技术及其在虚拟企业伙伴选择中的应用   总被引:5,自引:0,他引:5  
研究了一种多智能体的体系结构及其实现技术。并实现了基于这种智体技术的虚拟企业伙伴选择原型系统。证明智能体技术在构建虚拟组织信息系统中的有效性。  相似文献   

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