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Optimization in the Migration Problem of Mobile Agents in Distributed Information Retrieval Systems 被引量:1
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作者 HeYan-xiang ChenYi-feng +1 位作者 HeJing CaoJian-nong 《Wuhan University Journal of Natural Sciences》 EI CAS 2004年第2期153-160,共8页
In this paper, we employ genetic algorithms to solve the migration problem (MP). We propose a new encoding scheme to represent trees, which is composed of two parts: the pre-ordered traversal sequence of tree vertices... In this paper, we employ genetic algorithms to solve the migration problem (MP). We propose a new encoding scheme to represent trees, which is composed of two parts: the pre-ordered traversal sequence of tree vertices and the children number sequence of corresponding tree vertices. The proposed encoding scheme has the advantages of simplicity for encoding and decoding, ease for GA operations, and better equilibrium between exploration and exploitation. It is also adaptive in that, with few restrictions on the length of code, it can be freely lengthened or shortened according to the characteristics of the problem space. Furthermore, the encoding scheme is highly applicable to the degree-constrained minimum spanning tree problem because it also contains the degree information of each node. The simulation results demonstrate the higher performance of our algorithm, with fast convergence to the optima or sub-optima on various problem sizes. Comparing with the binary string encoding of vertices, when the problem size is large, our algorithm runs remarkably faster with comparable search capability. Key words distributed information retrieval - mobile agents - migration problem - genetic algorithms CLC number TP 301. 6 Foundation item: Supported by the National Natural Science Foundation of China (90104005), the Natural Science Foundation of Hubei Province and the Hong Kong Polytechnic University under the grant G-YD63Biography: He Yan-xiang (1952-), male, Professor, research direction: distributed and parallel processing, multi-agent systems, data mining and e-business. 展开更多
关键词 distributed information retrieval mobile agents migration problem genetic algorithms
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A Solution Model to Protect Mobile Agents Against Malicious Host Attack
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作者 迈克尔 徐良贤 《Journal of Shanghai Jiaotong university(Science)》 EI 2003年第1期1-5,共5页
Within an agent server, the model introduces a trusted third party entity called Secure Service Station(SSS). The SSS is a non\|hardware component and is intended to prevent most attacks performed by malicious hosts, ... Within an agent server, the model introduces a trusted third party entity called Secure Service Station(SSS). The SSS is a non\|hardware component and is intended to prevent most attacks performed by malicious hosts, by providing mechanisms that ensure attack detection and provide integrity to mobile agents. This noble technique involves encapsulating partial results obtained on each intermediate host and binding these results together using a hash function, thus forming a strong bonded chain that cannot be compromised. An analytical model to explore the system performance was also developed. 展开更多
关键词 mobile agent(ma) secure service station(SSS) agent host execution environment(EE)
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Distributed C-Means Algorithm for Big Data Image Segmentation on a Massively Parallel and Distributed Virtual Machine Based on Cooperative Mobile Agents
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作者 Fatéma Zahra Benchara Mohamed Youssfi +2 位作者 Omar Bouattane Hassan Ouajji Mohammed Ouadi Bensalah 《Journal of Software Engineering and Applications》 2015年第3期103-113,共11页
The aim of this paper is to present a distributed algorithm for big data classification, and its application for Magnetic Resonance Images (MRI) segmentation. We choose the well-known classification method which is th... The aim of this paper is to present a distributed algorithm for big data classification, and its application for Magnetic Resonance Images (MRI) segmentation. We choose the well-known classification method which is the c-means method. The proposed method is introduced in order to perform a cognitive program which is assigned to be implemented on a parallel and distributed machine based on mobile agents. The main idea of the proposed algorithm is to execute the c-means classification procedure by the Mobile Classification Agents (Team Workers) on different nodes on their data at the same time and provide the results to their Mobile Host Agent (Team Leader) which computes the global results and orchestrates the classification until the convergence condition is achieved and the output segmented images will be provided from the Mobile Classification Agents. The data in our case are the big data MRI image of size (m × n) which is splitted into (m × n) elementary images one per mobile classification agent to perform the classification procedure. The experimental results show that the use of the distributed architecture improves significantly the big data segmentation efficiency. 展开更多
关键词 Multi-agent System DISTRIBUTED ALGORITHM BIG Data ImaGE Segmentation MRI ImaGE C-MEANS ALGORITHM mobile agent
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Mobile Agents需求及体系结构 被引量:2
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作者 何炎祥 宋志凯 李锋 《计算机应用》 CSCD 2000年第8期1-3,共3页
:MobileAgents是分布系统的一种新体系结构和实现方法。MobileAgents适用的应用有 :网络管理、信息获取、远程设备控制、电子商务、移动计算等。本文主要从底层讨论了MobileAgents的运行需求和体系结构。
关键词 移动性 体系结构 mobileagents 分布式操作系统
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MAIQS:无线传感器网络中基于Mobile Agent的智能化数据查询方法研究与实现 被引量:2
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作者 王晓东 孟祥旭 孙言强 《传感技术学报》 CAS CSCD 北大核心 2008年第9期1613-1622,共10页
基于移动代理(mobile agent)的数据查询方法具有节约能耗、容错性能好、扩展方便等特点,特别适合于传感器网路。本文提出了基于移动代理的智能化数据查询系统(MAIQS)。系统将产生式规则系统应用到传感器网路的查询优化和agent生成中,通... 基于移动代理(mobile agent)的数据查询方法具有节约能耗、容错性能好、扩展方便等特点,特别适合于传感器网路。本文提出了基于移动代理的智能化数据查询系统(MAIQS)。系统将产生式规则系统应用到传感器网路的查询优化和agent生成中,通过规则匹配的方式优化查询路由,精简传输代码。基于传感器网络移动代理中间件系统Agilla,结合一个小规模的室内温度监测系统实现了本文的部分创新成果。实验结果表明,系统简便易用,实现了基于移动代理数据查询的自动化执行。 展开更多
关键词 传感器网路 数据查询 产生式规则系统 移动代理
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基于MASIF的Mobile Agent互操作性的研究与实现
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作者 曹义新 王浩 《计算机工程与设计》 CSCD 北大核心 2005年第8期2014-2016,2029,共4页
由于当前的诸多Mobile Agent商业系统之间相互协调工作不理想,致使解决Mobile Agent系统之间的互操作性成为研究Mobile Agent技术在实际应用领域中需要解决的首要问题之一。这里的研究以MASIF(Mobile Agent SystemIn-teroperability Fac... 由于当前的诸多Mobile Agent商业系统之间相互协调工作不理想,致使解决Mobile Agent系统之间的互操作性成为研究Mobile Agent技术在实际应用领域中需要解决的首要问题之一。这里的研究以MASIF(Mobile Agent SystemIn-teroperability Facilities)规范为蓝本,参考了这一领域中当前的研究成果,对互操作性进行了深入的研究和具体的初步实现,使互操作性标准的价值在实际应用中得到体现。 展开更多
关键词 mobile agent maSIF OMG CORBA AGLETS Concordia ATP
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基于Mobile Agents的会议安排系统的设计
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作者 金澈清 陈德人 《计算机工程与应用》 CSCD 北大核心 2002年第17期235-237,256,共4页
现代社会的竞争越来越激烈,合作越来越频繁,这就要求人们更经常一起沟通,解决问题。但是,由于每个人的日程安排不同,如何构建一个合理的会议安排模型也就成为一个课题。该文首先介绍了如何利用传统的方法构造会议安排系统,并且分析了它... 现代社会的竞争越来越激烈,合作越来越频繁,这就要求人们更经常一起沟通,解决问题。但是,由于每个人的日程安排不同,如何构建一个合理的会议安排模型也就成为一个课题。该文首先介绍了如何利用传统的方法构造会议安排系统,并且分析了它们的弊病,然后提出基于MobileAgents的会议安排系统的设计及实现。这个方案充分利用了移动代理平台的代码分布式、可移动的优点犤3犦,赋予每个代理一定的人工智能,从而合理安排会议日程。 展开更多
关键词 mobile agents 会议安排系统 设计 移动代理 分布式系统 客户机 服务器 计算机网络
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Mobile Agents在Mesh网络中的最大净化模型
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作者 邱俊 邱杰 《重庆工学院学报(自然科学版)》 2009年第11期117-122,共6页
讨论了有限数量Mobile Agents在Mesh网络中最大净化问题,得出了最大净化子网的边界主要由斜边构成的结论.发现当基点位于Mesh不同位置时,最大净化子网的结构具有不同的特征.
关键词 净化 移动代理 网格 污染 节点
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基于Mobile Agents的新型分布式入侵检测系统
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作者 茌寒文 庄毅 +1 位作者 刘佳 田明 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2003年第S1期165-167,共3页
在分析一般入侵检测方法的基础上 ,提出了一种新的基于MobileAgent (MA)的分布式入侵检测方法 .该方法兼顾了原有的优点 ,并在一定程度上弥补了原有方法的不足 .重点讨论了MA在入侵检测系统中的应用 ,叙述了如何通过MAs之间的协作进行... 在分析一般入侵检测方法的基础上 ,提出了一种新的基于MobileAgent (MA)的分布式入侵检测方法 .该方法兼顾了原有的优点 ,并在一定程度上弥补了原有方法的不足 .重点讨论了MA在入侵检测系统中的应用 ,叙述了如何通过MAs之间的协作进行入侵检测 ,并利用MA的特性对入侵检测系统本身的安全性和抗毁灭性做了具体的论述 .提出的入侵检测结构提高了系统的抗毁性和自恢复能力 ,提高了入侵检测系统自身的安全性 .说明了系统的体系结构。 展开更多
关键词 入侵检测 mobile agent 分布式 协作 抗毁性
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Node Coverage Algorithms in Wireless Sensor Networks Using Mobile Agents 被引量:9
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作者 RAINA Manik KUMAR Subhas PATRO Ranjeet 《自动化学报》 EI CSCD 北大核心 2006年第6期915-921,共7页
This paper proposes fault tolerant algorithms for routing mobile agents in a single channel wireless sensor network which cover every node in the network. These algorithms use local knowledge (assume no knowledge of g... This paper proposes fault tolerant algorithms for routing mobile agents in a single channel wireless sensor network which cover every node in the network. These algorithms use local knowledge (assume no knowledge of global deployment or topology, etc). We propose the algorithms and show mathematical analysis to support our claims. The paper ends with simulation studies and discussion of results. 展开更多
关键词 Wireless sensor networks mobile agents
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Mobile Agents on Internet 被引量:2
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作者 Zhou, Shun Zhu, Chunyan Ying, Shi 《Wuhan University Journal of Natural Sciences》 EI CAS 1998年第1期20-26,共7页
Mobile agents is becoming a prosperous research field due to recent prevalence of Internet andJava. Although it brings great challenges to traditional distributed processing technologies, its attractive advantages sti... Mobile agents is becoming a prosperous research field due to recent prevalence of Internet andJava. Although it brings great challenges to traditional distributed processing technologies, its attractive advantages stimulate us to further the work on it with great ardor. This paper presents the basic concepts aboutthe Inchoate technique and describes current research status on it. Major obstacles and their possible solutions are discussed. 展开更多
关键词 agent mobile computing INTERNET distributed processing
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A Forward Integrity and Itinerary Secrecy Protocol for Mobile Agents 被引量:1
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作者 GUAN Huanmei MENG Xuejun ZHANG Huanguo 《Wuhan University Journal of Natural Sciences》 CAS 2006年第6期1727-1730,共4页
The security problem of mobile agents is widely being discussed. The problem which protects mobile agents from malicious hosts is difficult to solve, because a host has access to the complete internal state of an agen... The security problem of mobile agents is widely being discussed. The problem which protects mobile agents from malicious hosts is difficult to solve, because a host has access to the complete internal state of an agent. Forward integrity in mobile agents guarantees that offers contained in a mobile agent from previously visited host can not be modified by a malicious host. Itinerary secrecy can prevent mobile agent from being passively attack. This paper proposes a new forward integrity and itinerary secrecy protocol for mobile agent. The protocol can also resist collusion truncation attack. 展开更多
关键词 mobile agent security forward integrity itinerary secrecy truncation attack
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基于XML的异构环境的Mobile Agents架构
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作者 叶音珏 《计算机应用与软件》 CSCD 北大核心 2008年第7期202-204,共3页
移动Agent技术是集软件Agent技术、移动代码技术、分布式对象技术于一体的技术。移动Agent的编程语言限制了A-gent平台的执行环境。然而由于java虚拟机的出现,Java的程序可以不需重新编译,就进行迁移。但是java的移动代理也需要架设平... 移动Agent技术是集软件Agent技术、移动代码技术、分布式对象技术于一体的技术。移动Agent的编程语言限制了A-gent平台的执行环境。然而由于java虚拟机的出现,Java的程序可以不需重新编译,就进行迁移。但是java的移动代理也需要架设平台上有java虚拟机的环境。为了实现一个真正的异构环境的系统,使用基于XML的移动Agent架构,即使用基于XML的移动A-gent代码、使用UDDI技术来为Agent注册和查询、Web Services技术来进行通信。它更容易在异构的系统环境中相互通信和操作并更容易实现和在各种环境中得到运用。 展开更多
关键词 移动代理 XML WEB服务 UDDI 代理架构
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NETWORK MANAGEMENT WITH SECURED MOBILE AGENT
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作者 Julius M.T.Rwakarambi(迈克尔) +1 位作者 XU Liang-xian(徐良贤) 《Journal of Shanghai Jiaotong university(Science)》 EI 2002年第2期204-210,共7页
Network management scheme must consider security challenges for the Mobile Agent paradigm to be accepted in the Internet computing world. Techniques to provide security solutions have been proposed and some have achie... Network management scheme must consider security challenges for the Mobile Agent paradigm to be accepted in the Internet computing world. Techniques to provide security solutions have been proposed and some have achieved good results. For example, it is possible to launch a code with a guarantee that it cannot attack the hosting sites. The main problem remaining, however, is protecting the mobile code against malicious service providers, the host problem. This paper proposed a Mobile Agent management scheme in a hierarchical level that provides to user a reliable and flexible global access to internet/network information services. We further described a protection mechanism to Mobile Agents against malicious hosts. As an effort to address host problems we first identify the kinds of attack that may be performed by malicious hosts, and propose a mechanism to prevent these attacks. At each agent host we introduce a trusted third party entity on each server called Secure Service Station (SSS) to carry out security actions. 展开更多
关键词 mobile agent (ma) Domain maNAGER (DM) maNAGER of maNAGERS (MoMs) Secure Service Station (SSS) EXECUTION Environment (EE)
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Coverage-optimization based guidance of mobile agents for improved control of distributed parameter systems
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作者 ZHUANG Bo CUI Baotong +1 位作者 WU Wei JIANG Zhengxian 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2019年第3期601-612,共12页
The control problem of a class of parabolic distributed parameter systems (DPSs) is investigated by using mobile agents with capabilities of sensing and actuating. The guidance strategies of mobile agents based on cov... The control problem of a class of parabolic distributed parameter systems (DPSs) is investigated by using mobile agents with capabilities of sensing and actuating. The guidance strategies of mobile agents based on coverage optimization methods are proposed to improve the control performance of the system and make the state norm of the system converge to zero faster. The coverage optimization problems are constructed based on the measurement of each agent. By solving the coverage optimization problems, the local optimal moving direction of each agent can be obtained. Then the gradient-based agent motion control laws are established. With the indicator function and the surface delta function, this method is generalized to n-dimensional space, and suitable for any sensing region with piecewise smooth boundaries. The stability and control performance of the system are analyzed. Numerical simulations show the effectiveness of the proposed methods. 展开更多
关键词 distributed parameter systems (DPSs) mobile agents COVERAGE OPTIMIZATION INDICATOR function
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Using Mobile Agents to Implement Workflow System
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作者 LIJie LIUXian-xing GUOZheng-wei 《Wuhan University Journal of Natural Sciences》 EI CAS 2004年第5期775-780,共6页
Current workflow management systems usually adopt the existing technologies such as TCP/IP-based Web technologies and CORBA as well to fulfill the bottom communications. Very often it has been considered only from a t... Current workflow management systems usually adopt the existing technologies such as TCP/IP-based Web technologies and CORBA as well to fulfill the bottom communications. Very often it has been considered only from a theoretical point of view, mainly for the lack of concrete possibilities to execute with elasticity. MAT (Mobile Agent Technology) represents a very attractive approach to the distributed control of computer networks and a valid alternative to the implementation of strategies for workflow system. This paper mainly focuses on improving the performance of workflow system by using MAT. Firstly, the performances of workflow systems based on both CORBA and mobile agent are summarized and analyzed; Secondly, the performance contrast is presented by introducing the mathematic model of each kind of data interaction process respectively. Last, a mobile agentbased workflow system named MAWMS is presented and described in detail. Key words workflow - Mobile Agent - Contract Net Protocol - CORBA - Web CLC number TP 393 Foundation item: Supported by the National Natural Science Foundation of China (60272024) and National Natural Science Foundation of Henan Province (0411014100)Biography: LI Jie, (1975-), male, lector, Ph. D., research direction: workflow, mobile agent, network management. 展开更多
关键词 WORKFLOW mobile agent Contract Net Protocol CORBA WEB
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Control of group of mobile autonomous agents via local strategies
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作者 Lixin GAO Daizhan CHENG Yiguang HONG 《控制理论与应用(英文版)》 EI 2008年第4期357-364,共8页
This paper considers the formation control problem of multi-agent systems in a distributed fashion. Two cases of the information propagating topologies among multiple agents, characterized by graphics model, are consi... This paper considers the formation control problem of multi-agent systems in a distributed fashion. Two cases of the information propagating topologies among multiple agents, characterized by graphics model, are considered. One is fixed topology. The other is switching topology which represents the limited and less reliable information exchange. The local formation control strategies established in this paper are based on a simple modification of the existing consensus control strategies. Moreover, some existing convergence conditions are shown to be a special case of our model even in the continuous-time consensus case. Therefore, the results of this paper extend the existing results about the consensus problem. 展开更多
关键词 Formation control Distributed control Multi-agent coordination mobile autonomous agent
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The Geographic Information Grid System Based on Mobile Agent
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作者 SHEN Zhi-dong TONG Qiang +1 位作者 HUANG Xian-feng WANG Hua-min 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第1期304-308,共5页
We analyze the deficiencies of current application systems, and discuss the key requirements of distributed Geographie Information serviee (GIS), We construct the distributed GIS on grid platform. Considering the fl... We analyze the deficiencies of current application systems, and discuss the key requirements of distributed Geographie Information serviee (GIS), We construct the distributed GIS on grid platform. Considering the flexibility and efficiency, we integrate the mobile agent technology into the system. We propose a new prototype system, the Geographic Information Grid System (GIGS) based on mobile agent. This system has flexible services and high performance, and improves the sharing of distributed resources. The service strategy of the system and the examples are also presented. 展开更多
关键词 GRID geographic information system (GIS) spatial data mobile agent
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Mobile Agent Platform and Naming Scheme of Agents
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作者 Sudin SHRESTHA 徐拾义 Jagath RATNAYEKE 《Journal of Shanghai University(English Edition)》 CAS 2004年第2期177-179,共3页
Mobile agent technology has drawn a tremendous amount of attention from researchers in distributed computing recently as it promises to provide an elegant and efficient way of solving complex distributed problems, as ... Mobile agent technology has drawn a tremendous amount of attention from researchers in distributed computing recently as it promises to provide an elegant and efficient way of solving complex distributed problems, as well as offering a new approach to human-computer-interaction. In mobile agent systems, the mobile agent travels autonomously from one computer to another within the agent enabled networks, executes itself in the agent execution environment, collects useful information and makes its own decision or behalf of its owner. This mobility nature of mobile agent demands its unique name in the whole network otherwise it gets lost or conflicts with other mobile agent having same name. This paper proposes a naming scheme which promises a unique name for a mobile agent within that network. Key words mobile agent - mobile agent platform - naming scheme 展开更多
关键词 mobile agent mobile agent platform naming scheme
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An Anonymous Payment Protocol withMobile Agents in Hostile Environments
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作者 LIUYi XIANGMing-sen WANGYu-min 《Wuhan University Journal of Natural Sciences》 CAS 2005年第1期271-274,共4页
By using Pedersen's verifiable secret sharing scheme and the theory of crossvalidation, we propose an a-nonymous payment protocol which have following features: protecting theconfidentiality of sensitive payment i... By using Pedersen's verifiable secret sharing scheme and the theory of crossvalidation, we propose an a-nonymous payment protocol which have following features: protecting theconfidentiality of sensitive payment information from spying by malicioushosts; using a trustedthird party in a minimal way; verifying the validity of the share by the merchant; allowing agent toverify that the product which it is a-bout to receive is the one it is paying for; keeping thecustomer anonymous. 展开更多
关键词 mobile agent anonymous payment protocol verifiable secret sharing thetheory of cross validation
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