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2005 International Conference on Collaborative Computing: Networking, Applications and Worksharing最新文献

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OpenSeminar: Web-based Collaboration Tool for Open Educational Resources 开放研讨会:开放教育资源的网络协作工具
M. Rappa, Sarah E. Smith, A. Yacoub, L. Williams
Today, it is common for university instructors to compile links to online resources for the courses they teach, either as a supplement to a textbook, reading packet or, in some cases, as a replacement. Finding resources and keeping them up to date is time consuming. Instructors who teach similar subjects at different universities might benefit from working together to compile and share online resources for their courses. This paper describes a tool for sharing instructional materials called OpenSeminar. The purpose of OpenSeminar is to facilitate the structured compilation of open, online resources among a group of collaborators who share a common area of interest. Using OpenSeminar, the selection of resources can be customized and deployed to meet the specific needs of each professor. OpenSeminar adopts an editorial peer review framework to ensure content quality control. An illustration of OpenSeminar in the field of software engineering is provided
如今,大学教师通常会为他们所教授的课程编写在线资源的链接,作为教科书、阅读材料的补充,或者在某些情况下作为替代。查找资源并使其保持最新是非常耗时的。在不同大学教授类似课程的教师可能会从共同编写和共享在线课程资源中受益。本文描述了一个名为OpenSeminar的用于共享教学材料的工具。OpenSeminar的目的是在一群有共同兴趣领域的合作者之间促进开放在线资源的结构化编译。使用OpenSeminar,资源的选择可以定制和部署,以满足每个教授的特定需求。OpenSeminar采用编辑同行评审框架,确保内容质量控制。给出了OpenSeminar在软件工程领域的应用实例
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引用次数: 5
Collaborative movement of rescue robots for reliable and effective networking in disaster area 救援机器人协同运动,实现可靠有效的灾区联网
Hisayoshi Sugiyama, T. Tsujioka, M. Murata
We investigated a collaboration scheme for rescue robots for reliable and effective operation of rescue systems using robots. The investigation focused on the collaborative movement of robots to maintain their wireless network. We propose classifying the robots into search robots and relay robots and using a behavior algorithm for their collaborative movement. According to the algorithm, search robots explore the disaster area and search for victims, whereas relay robots act as relay terminals within the network. Each robot classifies itself autonomously and repeatedly as the system operation progresses. We evaluated the performance of the victim detection system (a rescue system introduced in our previous paper) based on the proposed scheme by computer simulation. Its performance was improved compared with the case where every robot walked randomly in the disaster area and no classification occurred
我们研究了一种救援机器人协作方案,以使使用机器人的救援系统可靠有效地运行。调查的重点是机器人的协同运动,以维持他们的无线网络。我们提出将机器人分为搜索机器人和中继机器人,并使用一种行为算法来实现它们的协同运动。根据该算法,搜索机器人对灾区进行探索和搜救,而中继机器人在网络中充当中继终端。随着系统运行的进行,每个机器人都会自主地、反复地对自己进行分类。我们通过计算机仿真评估了基于所提出方案的受害者检测系统(我们在之前的论文中介绍的救援系统)的性能。与每个机器人在灾区随机行走且不进行分类的情况相比,其性能得到了提高
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引用次数: 35
An experimental evaluation of spam filter performance and robustness against attack 垃圾邮件过滤器性能和抗攻击鲁棒性的实验评估
Steve Webb, Subramanyam Chitti, C. Pu
In this paper, we show experimentally that learning filters are able to classify large corpora of spam and legitimate email messages with a high degree of accuracy. The corpora in our experiments contain about half a million spam messages and a similar number of legitimate messages, making them two orders of magnitude larger than the corpora used in current research. The use of such large corpora represents a collaborative approach to spam filtering because the corpora combine spam and legitimate messages from many different sources. First, we show that this collaborative approach creates very accurate spam filters. Then, we introduce an effective attack against these filters which successfully degrades their ability to classify spam. Finally, we present an effective solution to the above attack which involves retraining the filters to accurately identify the attack messages
在本文中,我们通过实验证明,学习过滤器能够以很高的准确率对大量垃圾邮件和合法电子邮件信息进行分类。我们实验中的语料库包含大约50万条垃圾邮件和类似数量的合法消息,使它们比当前研究中使用的语料库大两个数量级。这种大型语料库的使用代表了垃圾邮件过滤的协作方法,因为语料库将来自许多不同来源的垃圾邮件和合法消息结合在一起。首先,我们展示了这种协作方法创建了非常精确的垃圾邮件过滤器。然后,我们引入了一种针对这些过滤器的有效攻击,成功地降低了它们对垃圾邮件的分类能力。最后,我们提出了一种有效的解决方案,即重新训练过滤器以准确识别攻击消息
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引用次数: 22
Secure and efficient key distribution for collaborative applications 用于协作应用程序的安全高效的密钥分发
Fuwen Liu, H. König
Confidentiality is a key demand for many collaborative applications in the Internet, e.g. business meetings. In a more and more mobile society there is an increasing need of spontaneous meetings in ad hoc environments, often with changing partners. To assure confidentiality of such meetings the partners have to agree upon a common secret key for encrypting their communication. While centralized collaborative systems provide practicable solutions for this, it still represents a challenging task in decentralized systems using the peer-to-peer paradigm. In this paper we present a simple key distribution protocol, called VTKD, which was especially designed for small dynamic peer groups. It consists of two parts: a mutual authentication of the partners and a secure key renewal. The protocol uses a virtual token to determine the partner responsible for the key generation and distribution procedure. VTKD fulfills the relevant demands concerning group key exchange and is more efficient related to key renewal delay than existing key exchange protocols
保密性是Internet中许多协作应用程序的关键需求,例如商务会议。在一个流动性越来越强的社会中,人们越来越需要在临时环境中自发地开会,通常需要更换合作伙伴。为了确保此类会议的机密性,合作伙伴必须就加密其通信的公共密钥达成一致。虽然集中式协作系统为此提供了切实可行的解决方案,但在使用点对点范式的分散系统中,它仍然是一项具有挑战性的任务。在本文中,我们提出了一个简单的密钥分发协议,称为VTKD,它是专门为小型动态对等组设计的。它由两部分组成:合作伙伴的相互认证和安全密钥更新。该协议使用虚拟令牌来确定负责密钥生成和分发过程的合作伙伴。VTKD满足了组密钥交换的相关需求,在密钥更新延迟方面比现有的密钥交换协议更有效
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引用次数: 6
Isabel: an application for real time collaboration with a flexible floor control 伊莎贝尔:一个灵活的地板控制实时协作的应用程序
J. Quemada, T. Miguel, Santiago Pavón, G. Huecas, T. Robles, J. Salvachúa, Diego Andres Acosta Ortiz, Vicente Sirvent, Fernando Escribano, J. Sedano
Isabel is a P2P like multipoint group collaboration tool for the Internet, which implements an innovative service concept for synchronous collaborations based on a flexible and programmable floor control. This approach leads to a more natural and effective management of collaboration sessions. The flexible and programmable floor control incorporates the experience gained in many years of service trials with real users in distributed conferences, classrooms or meetings. The main conclusion after all those trials is that services should use more or less the same media components (audio, video or application sharing), but differ in the floor control model used. The flexible floor control is especially well suited for multipoint audience interconnection in distributed classrooms, conferences, meetings, etc. The development of Isabel started in 1993 for the distribution of the RACE Summer Schools on Advanced Broadband Communication (ABC93-6) where the early versions of this service concept were developed and tuned. The effectiveness of the Isabel service concept has been proven and enhanced since then in many other distributed events, such as Global360x, IDC9x, Global IPv6 Summitts, Telecom I+D, etc. The adaptation of Isabel to the broadband Internet (including VPNs, IPv4/IPv6 transition scenarios, mixtures of unicast and multicast) has reached maturity recently
Isabel是一个类似于P2P的互联网多点组协作工具,它实现了基于灵活和可编程地板控制的同步协作的创新服务概念。这种方法可以更自然、更有效地管理协作会话。灵活和可编程的地板控制系统结合了在分布式会议、教室或会议中与真实用户进行多年服务试验所获得的经验。在所有这些试验之后的主要结论是,服务应该或多或少地使用相同的媒体组件(音频、视频或应用程序共享),但所使用的底层控制模型不同。灵活的楼层控制特别适合于分布式教室、会议、会议等场所的多点观众互联。Isabel的开发始于1993年,目的是分发RACE高级宽带通信暑期学校(ABC93-6),在那里开发和调整了该服务概念的早期版本。从那时起,Isabel服务概念的有效性在许多其他分布式事件中得到了证明和增强,如Global360x, IDC9x,全球IPv6峰会,电信I+D等。伊莎贝尔对宽带互联网(包括vpn、IPv4/IPv6转换场景、单播和组播混合)的适应最近已经成熟
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引用次数: 16
Analysis of peer-to-peer distributed reputation schemes 点对点分布式信誉方案分析
Manuel Rodriguez-Perez, O. Esparza, J. L. Muñoz
Peer-to-peer systems consist of groups of nodes acting as clients and servers. These groups of nodes communicate directly among themselves through wide-area networks. Some of the benefits of fully distributed peer-to-peer systems are scalability, resource aggregation and interoperability without any administration cost or centralized infrastructure support. In this context, reputation schemes aid the service requesters to choose the proper resource provider and to prevent malicious behaviors. This paper analyzes reputation management in fully distributed peer-to-peer systems. This paper discusses the main issues that a reputation framework must address and analyzes the most representative distributed reputation systems. This paper also discusses the main advantages and drawbacks of each proposal in relation to peer-to-peer reputation system requirements
点对点系统由充当客户机和服务器的节点组组成。这些节点组通过广域网直接相互通信。完全分布式点对点系统的一些好处是可伸缩性、资源聚合和互操作性,而无需任何管理成本或集中式基础设施支持。在这种情况下,信誉方案帮助服务请求者选择适当的资源提供者并防止恶意行为。本文分析了全分布式点对点系统中的信誉管理问题。本文讨论了信誉框架必须解决的主要问题,并分析了最具代表性的分布式信誉系统。本文还讨论了与点对点信誉系统要求相关的每个提案的主要优点和缺点
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引用次数: 13
Distributed core assisted scalable data dissemination in mobile ad hoc networks 分布式核心有助于移动自组织网络中可扩展的数据传播
Gautam Das, M. Fazio, M. Villari, A. Puliafito
Data dissemination is used in mobile ad hoc networks (MANETs) for activities like issuing commands, propagating alarms, and configuring nodes. Existing forms of data dissemination are based upon push or pull approaches. We present a novel data dissemination approach that supports push and pull approaches as well as direct node-to-node dissemination method. Our proposal is to develop a highly connected core based on two-hop neighbor information to assist in dissemination. We propose some algorithms for selecting a subset of network's nodes to perform data dissemination on behalf of the complete network. The core structure is characterized by its ability to work with limited neighbor information, connectivity maintenance, high connectivity with other features related to node degree. This property helps to lessen the control overhead as piggybacking can be used to gain partial neighbor information. We provide simulation results showing the performances of the proposed scheme
数据传播在移动自组织网络(manet)中用于发出命令、传播警报和配置节点等活动。现有的数据传播形式是基于推或拉的方法。我们提出了一种新的数据传播方法,支持推拉方法以及直接的节点到节点传播方法。我们的建议是开发一个基于两跳邻居信息的高连接核心,以协助传播。我们提出了一些算法来选择网络节点的子集来代表整个网络执行数据传播。核心结构具有在有限的邻居信息下工作的能力、连通性维护能力、与节点度相关的其他特征的高连通性等特点。此属性有助于减少控制开销,因为可以使用承载来获取部分邻居信息。仿真结果显示了所提方案的性能
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引用次数: 1
Collaborative object grouping in graphics editing systems 图形编辑系统中的协同对象分组
S. Xia, David Sun, Chengzheng Sun, David Chen
Object grouping is an effective means for managing the complexity in graphics editing. However, research on collaborative object grouping has not been adequate. In this paper, we contribute a novel collaborative object grouping technique, called CoGroup. CoGroup can achieve maximal combined effects among compatible operations and preserve all users' work in the face of conflict without the overhead of undoing and redoing conflict operations as in existing serialization approaches. CoGroup has been implemented in collaborative word processing (CoWord) and slide authoring (CoPowerPoint) systems and is generally applicable to a range of off-the-shelf commercial graphics applications, particularly CAD/CASE tools
对象分组是管理图形编辑复杂性的有效手段。然而,对协同对象分组的研究还不够充分。在本文中,我们提出了一种新的协作对象分组技术,称为CoGroup。CoGroup可以在兼容操作之间实现最大的组合效果,并且在面对冲突时保留所有用户的工作,而不像现有的序列化方法那样需要撤消和重做冲突操作。CoGroup已经在协作文字处理(CoWord)和幻灯片制作(coppowerpoint)系统中实现,并且通常适用于一系列现成的商业图形应用程序,特别是CAD/CASE工具
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引用次数: 17
Syntax-based reconciliation for asynchronous collaborative writing 异步协作写作的基于语法的协调
Haifeng Shen, Chengzheng Sun
With the rapid popularity of computer networks, collaborative document writing becomes increasingly desirable in recent years. In practice, collaborative writing is more likely to be done in an asynchronous manner, where collaborators usually work in parallel with different time schedules and are not present at the same time. Merging is the key technique to support concurrent writing and textual merging remains the primary and the only successful merging function to date. However, most of existing systems support constrained textual merging for the simplicity of the underling merging algorithms. In this paper, we propose a flexible operation-based syntactic textual merging algorithm that is capable of reconciling changes made in parallel by different users according to the syntax of the files to be merged or user-specified merging policies. Moreover, this syntax-based reconciliation algorithm is able to preserve the intentions of individual changes
近年来,随着计算机网络的迅速普及,协作文档编写变得越来越受欢迎。在实践中,协作写作更可能以异步方式完成,合作者通常在不同的时间表上并行工作,并且不会同时出现。合并是支持并发写入的关键技术,而文本合并仍然是迄今为止主要且唯一成功的合并功能。然而,大多数现有系统都支持约束文本合并,以简化底层合并算法。在本文中,我们提出了一种灵活的基于操作的语法文本合并算法,该算法能够根据待合并文件的语法或用户指定的合并策略协调不同用户并行进行的更改。此外,这种基于语法的协调算法能够保留单个更改的意图
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引用次数: 7
A collaborative multi-agent based conference planner application using Web and grid services 一个使用Web和网格服务的基于多代理的协作会议计划应用程序
Amina Tariq, A. Basharat, Arshad Ali, H. F. Ahmad, H. Suguri
Distributed collaborative computing services have taken over centralized computing platforms allowing the development of distributed collaborative user applications. These applications enable people and computers to work together more productively. Multi-agent system (MAS) has emerged as a distributed collaborative environment which allows a number of agents to cooperate and interact with each other in a complex environment. We want to place our agents in problems whose solutions require the collation and fusion of information, knowledge or data from distributed and autonomous information sources. In this paper we present the design and implementation of an agent based conference planner application that uses collaborative effort of agents which function continuously and autonomously in a particular environment. The application also enables the collaborative use of services deployed geographically wide in different technologies i.e. software agents, grid computing and Web service. The premise of the application is that it allows autonomous agents interacting with Web and grid services to plan a conference as a proxy to their owners (humans)
分布式协作计算服务已经取代了集中式计算平台,允许开发分布式协作用户应用程序。这些应用程序使人和计算机能够更有效地协同工作。多智能体系统(MAS)是一种允许多个智能体在复杂环境中相互协作和交互的分布式协作环境。我们希望将我们的代理放在需要整理和融合来自分布式和自治信息源的信息、知识或数据的问题中。在本文中,我们提出了一个基于代理的会议计划应用程序的设计和实现,该应用程序使用代理的协作努力,这些代理在特定环境中连续自主地工作。该应用程序还支持协作使用部署在地理上广泛的不同技术中的服务,例如软件代理、网格计算和Web服务。该应用程序的前提是,它允许与Web和网格服务交互的自主代理作为其所有者(人类)的代理来计划会议。
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引用次数: 4
期刊
2005 International Conference on Collaborative Computing: Networking, Applications and Worksharing
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