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Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.最新文献

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Architecture description language based on object-oriented Petri nets for multi-agent systems 基于面向对象Petri网的多智能体系统体系结构描述语言
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461197
Zhenhua Yu, Zhiwu Li
Multi-agent systems are studied from the software architecture point of view. As traditional architecture description languages (ADLs) are difficult to describe the semantics of multi-agent systems, a novel architecture description language for multi-agent systems (ADLMAS) rooted in BDI model is proposed, which adopts object-oriented Petri nets presented in this paper as a formal theory basis. ADLMAS can visually and intuitively depict a formal framework for multi-agent system from the agent level and society level, describe the static and dynamic semantics, and analyze the dynamic behaviors of multi-agent systems and interactions among agents with formal methods. Moreover, ADLMAS is very suitable for representing concurrent, distributed and synchronous multi-agent systems. Finally, to illustrate the favorable representation capability of ADLMAS, an example of multi-agent systems in electronic marketplace is provided.
从软件体系结构的角度研究了多智能体系统。针对传统体系结构描述语言难以描述多智能体系统语义的问题,提出了一种基于BDI模型的多智能体系统体系结构描述语言,该语言采用本文提出的面向对象Petri网作为形式化理论基础。ADLMAS可以直观地从主体层和社会层描述多智能体系统的形式化框架,描述静态语义和动态语义,用形式化方法分析多智能体系统的动态行为和智能体之间的相互作用。此外,ADLMAS非常适合表示并发、分布式和同步的多智能体系统。最后,以电子市场中的多智能体系统为例,说明了ADLMAS良好的表示能力。
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引用次数: 5
Safe steering speed estimation and optimal trajectory planning for intelligent vehicles 智能汽车安全转向速度估计与最优轨迹规划
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461279
Li Li, Guanpi Lai, Feiyue Wang
With increasing demands on driving safety, vehicle steering control attracts significant interests during the last two decades. One important problem is that drivers may overestimate the maximum speed they can adopt or choose a wrong trajectory profile (steering guideline) during steering. This often leads the vehicle run out of the road. To avoid such accidents, this paper analyzes the relationship between navigation speed and the corresponding cruise offset with given steering curvature, and provides an estimation method for maximum safe speed regarding a curve or a lane change trajectory. To improve ride comfort, an optimal guideline planning framework considering different driver/passenger requirement is proposed. Besides, how to choose graphical user interface for steering guidance is also discussed.
随着人们对驾驶安全性要求的不断提高,车辆转向控制在近二十年来引起了人们的广泛关注。一个重要的问题是驾驶员可能会高估他们可以采用的最大速度或在转向过程中选择错误的轨迹轮廓(转向指南)。这往往导致车辆跑出道路。为了避免此类事故的发生,本文分析了给定转向曲率下航行速度与相应巡航偏移量的关系,给出了一种弯道或变道轨迹下最大安全速度的估计方法。为了提高乘坐舒适性,提出了一种考虑不同驾乘需求的最优路线规划框架。此外,还讨论了如何选择用于转向制导的图形用户界面。
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引用次数: 10
An application of sensor networks for syndromic surveillance 传感器网络在综合征监测中的应用
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461185
Chung-Kuo Chang, J. Overhage, J. Huang
Since the inception of sensor networks, it is recognized that the foremost application of such a network is on monitoring environmental activities. Due to the extreme resource constraints, a critical feature of such a network is to conserve energy to extend the lifetime of the sensors. A variety of energy aware algorithms have been developed for these networks by aggregating or filtering of data being transmitted. Energy can also be saved by selecting a subgroup of sensors to activate each time. Uncertainties are introduced due to the inaccuracy in sensor readings, noise or failure of sensors, or the omissions of data transmission following those energy aware algorithms. On the other hand, there usually are uncertainties inherited in the application where these sensor networks are built. Its usefulness depends on whether we can find a strategy to reduce uncertainties and at the same time conserve energy in such a system. We discuss the application of sensor networks in the problem of syndromic surveillance. The aggregated action of the sensors would provide early evidence for screening and identification of outbreaks of diseases or bio-agents. We study the effects of using the Bayesian methods to reduce uncertainties in sensor networks for medical decision-making. Experimental results obtained using operational data are used to verify our assumptions. A lot of study has been done on applying sensor networks to tasks such as tracking of a moving object, which is mapping an estimation task over a network of sensors. This project is the first case to map a medical decision, which is essentially an uncertainty refinement problem to sensor networks.
自传感器网络建立以来,人们认识到这种网络的首要应用是监测环境活动。由于极端的资源限制,这种网络的一个关键特征是节省能量以延长传感器的使用寿命。通过聚合或过滤传输的数据,为这些网络开发了各种能量感知算法。通过每次选择一组传感器来激活,也可以节省能源。由于传感器读数不准确,传感器噪声或故障,或在这些能量感知算法之后数据传输的遗漏,引入了不确定性。另一方面,在构建传感器网络的应用中,通常存在继承的不确定性。它的有用性取决于我们能否在这样一个系统中找到一种减少不确定性同时节约能量的策略。我们讨论了传感器网络在综合征监测问题中的应用。传感器的综合作用将为筛选和识别疾病或生物制剂的爆发提供早期证据。我们研究了使用贝叶斯方法来减少医疗决策传感器网络中的不确定性的效果。用实际数据得到的实验结果验证了我们的假设。在将传感器网络应用于运动目标跟踪等任务方面已经做了大量的研究,这是在传感器网络上映射估计任务。该项目是第一个将医疗决策映射到传感器网络的案例,医疗决策本质上是一个不确定性细化问题。
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引用次数: 33
A new image-based real-time flame detection method using color analysis 一种基于图像的基于颜色分析的火焰实时检测方法
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461169
Wen-Bing Horng, Jian-Wen Peng, Chih-Yuan Chen
A new image-based real-time flame detection method is proposed in this paper. First, fire flame features based on the HSI color model are extracted by analyzing 70 flame images. Then, based on these flame features, regions with fire-like colors are roughly separated from an image. Besides segmenting fire flame regions, background objects with similar fire colors or caused by color shift resulted from the reflection of fire flames are also separated from the image. In order to get rid of these spurious fire-like regions, the image difference method and the invented color masking technique are applied. Finally, a simple method is devised to estimate the burning degree of fire flames so that users could be informed with a proper warning alarm. The proposed method is tested with seven diverse fire flame video clips on a Pentium II 350 processor with 128 MB RAM at the process speed of thirty frames per second. The experimental results are quite encouraging. The proposed method can achieve more than 96.97% detection rate on average. In addition, the system can correctly recognize fire flames within one second on the initial combustion from the test video clips, which seems very promising.
提出了一种新的基于图像的火焰实时检测方法。首先,通过对70幅火焰图像的分析,提取基于HSI颜色模型的火焰火焰特征;然后,基于这些火焰特征,从图像中大致分离出具有类似火焰颜色的区域。除了分割火焰区域外,还将与火焰颜色相似或因火焰反射而产生色移的背景物体从图像中分离出来。为了消除这些虚假的火状区域,应用了图像差分法和发明的颜色掩蔽技术。最后,设计了一种简单的方法来估计火焰的燃烧程度,以便向用户发出适当的警告警报。该方法在Pentium II 350处理器上以每秒30帧的处理速度对7个不同的火焰视频片段进行了测试。实验结果相当令人鼓舞。该方法的平均检出率达到96.97%以上。此外,从测试视频片段来看,该系统可以在一秒钟内正确识别出最初燃烧的火焰,这似乎很有前景。
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引用次数: 176
H/sub /spl infin// output feedback control for delay Takagi-Sugeno fuzzy systems 延时Takagi-Sugeno模糊系统的H/sub /spl输入/输出反馈控制
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461246
Yu-Cheng Lin, Ji-Chang Lo
This paper studies an H/sub /spl infin// output feedback control problem for continuous-time T-S fuzzy systems with time-varying delays both in state variables and forced input. Unlike the existing results need the information on derivative of delay time, we propose two delay-dependent sufficient conditions free from derivative information on delay time, which means a fast-varying delay time is allowed. Based on Lyapunov theory, the sufficient conditions are expressed in terms of LMIs. Lastly, an example is demonstrated using the proposed design methodology.
研究了具有状态变量和强制输入时变时滞的连续时间T-S模糊系统的H/sub /spl输入/输出反馈控制问题。与现有的结果需要时滞导数信息不同,我们提出了两个与时滞相关的充分条件,不需要时滞导数信息,这意味着允许快速变化的时滞时间。基于李雅普诺夫理论,用lmi表示了充分条件。最后,给出了应用所提出的设计方法的实例。
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引用次数: 2
A new immunity-based model for network intrusion detection 基于免疫的网络入侵检测新模型
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461170
Ruifan Li, Cong Wang, Xuyan Tu
Natural immune system has many features for inspirations to computer security. From this paradigm, a new multi-agent model for network-based intrusion detection system is presented. We briefly summarize the main mechanisms of immunology from information processing perspective and concisely review the related works. Moreover, some mechanisms, including cloning with hyper-mutation, affinity maturation, and stigmergy are incorporated to this new model for network intrusion detection. Its conceptual view and working mechanism are described, and its characteristics, autonomous, robust, adaptable, and lightweight, are discussed.
自然免疫系统有许多特点,为计算机安全提供了灵感。在此基础上,提出了一种新的基于网络的入侵检测系统多智能体模型。本文从信息加工的角度简要总结了免疫学的主要机制,并对相关工作进行了简要回顾。此外,还将超突变克隆、亲和成熟和污名化等机制纳入了网络入侵检测新模型。阐述了其概念和工作机理,讨论了其自主、鲁棒、适应性强、轻量化等特点。
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引用次数: 0
SoftMan and agent SoftMan和agent
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461313
Lu Qingling, Zeng Guangping, Zhang Wei, Tu Xuyan
SoftMan is a new concept based on the production of distributed technique, intelligent robot and artificial life. SoftMan is the development of a mobile agent and is a virtual robot in the network environment. It inherited many research fruits of robot and agent. Therefore, it has the essential features of the intelligent robot and agent, and at the same time has life features. Comparing with the agent, SoftMan not only has more all-around humanized intelligence, humanized behavior and function, but also has the ability of environment identification, self-determination and free will. SoftMan has some digital life features which agent has none, such as activity, learning and evolution, inheritance, variation and emotion. The corresponding theory and technology fruits provided a good foundation and reference for studying SoftMan. At first, this paper introduces the technology of SoftMan and agent, and then discusses the relationship between SoftMan and agent from the viewpoint of structure model, function, implementation technique, and application example.
SoftMan是基于分布式技术、智能机器人和人工生命生产的新概念。SoftMan是一种移动代理的开发,是网络环境下的虚拟机器人。它继承了机器人和智能体的许多研究成果。因此,它具有智能机器人和代理的基本特征,同时又具有生命特征。与智能体相比,SoftMan不仅具有更全面的人性化智能、人性化行为和功能,还具有环境识别能力、自我决定能力和自由意志能力。SoftMan具有活动、学习和进化、遗传、变异和情感等智能体所不具备的数字生命特征。相应的理论和技术成果为研究SoftMan提供了良好的基础和参考。本文首先介绍了SoftMan和agent技术,然后从结构模型、功能、实现技术和应用实例等方面讨论了SoftMan和agent之间的关系。
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引用次数: 12
Hybrid models toward traffic detector data treatment and data fusion 面向交通检测器数据处理和数据融合的混合模型
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461245
Yuh-Horng Wen, Tsu-Tian Lee, Hsun-Jung Cho
This paper develops a data processing with hybrid models toward data treatment and data fusion for traffic detector data on freeways. hybrid grey-theory-based pseudo-nearest neighbor method and grey time-series model are developed to recover spatial and temporal data failures. Both spatial and temporal patterns of traffic data are also considered in travel time data fusion. Two travel time data fusion models are presented using a speed-based link travel time extrapolation model for analytical travel time estimation and a recurrent neural network with grey-models for real-time travel time prediction. Field data from the Taiwan national freeway no. 1 were used as a case study for testing the proposed models. Study results shown that the data treatment models for faulty data recovery were accurate. The data fusion models were capable of accurately predicting travel times. The results indicated that the proposed hybrid data processing approaches can ensure the accuracy of travel time estimation with incomplete data sets.
针对高速公路交通检测器数据的数据处理和数据融合,提出了一种混合模型的数据处理方法。提出了基于混合灰色理论的伪最近邻法和灰色时间序列模型来恢复时空数据故障。出行时间数据融合还考虑了交通数据的时空格局。提出了两种行程时间数据融合模型,一种是基于速度的路段行程时间外推模型,用于解析式行程时间估计;另一种是基于灰色模型的递归神经网络,用于实时行程时间预测。现场数据来自台湾国家高速公路。1被用作测试所提出模型的案例研究。研究结果表明,故障数据恢复的数据处理模型是准确的。数据融合模型能够准确预测飞行时间。结果表明,所提出的混合数据处理方法能够保证不完全数据集下的行程时间估计的准确性。
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引用次数: 17
Performance evaluation of quality of service aware request placement techniques 服务质量感知请求放置技术的性能评估
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461283
F. Velasco, Félix Ramos
Web services have become very popular over the past few years. However, users are facing the problem of the perceived QoS. Practical approaches to address this issue are based on service replication at multiple locations and on allocation mechanisms to dispatch requests in such a way that the QoS perceived by the user is improved. In this paper we compare user perceived QoS performance of three dynamic request placement techniques. One technique randomly allocates Web requests while the other two techniques implement a market-based mechanism for QoS negotiation and request allocation. The analysis is conducted via simulation with SIDE using a behavioral model of Web traffic to simulate accurate traffic conditions and determine the limitations or validity of these techniques.
Web服务在过去几年中变得非常流行。然而,用户面临着感知QoS的问题。解决这个问题的实际方法是基于多个位置的服务复制和分配机制,以使用户感知到的QoS得到改善的方式分派请求。本文比较了三种动态请求放置技术的用户感知QoS性能。一种技术随机分配Web请求,而另外两种技术实现基于市场的机制,用于QoS协商和请求分配。分析是通过SIDE的模拟进行的,使用Web流量的行为模型来模拟准确的流量状况,并确定这些技术的局限性或有效性。
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引用次数: 1
Comparative study on time-varying target localization methods using multiple unmanned aerial vehicles: Kalman estimation and triangulation techniques 多架无人机时变目标定位方法的比较研究:卡尔曼估计与三角测量技术
Pub Date : 2005-03-19 DOI: 10.1109/ICNSC.2005.1461206
G. York, D. Pack
In this paper, we evaluate two different methods to search, detect, and locate mobile radio frequency (RF) targets using multiple cooperative unmanned aerial vehicles (VAVs). The primary difference between the two methods is the target localization technique used: the Kalman estimation technique and the triangulation technique. We compare the two methods on the basis of the total task completion time and the total average target location accuracy. The qualitative results generated by a graphical simulator are presented as a part of our comparison study.
在本文中,我们评估了两种不同的方法来搜索,探测和定位移动射频(RF)目标使用多个协作无人机(vav)。两种方法的主要区别在于所使用的目标定位技术:卡尔曼估计技术和三角测量技术。我们根据总任务完成时间和总平均目标定位精度对两种方法进行比较。图形模拟器产生的定性结果是我们比较研究的一部分。
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引用次数: 20
期刊
Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.
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