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随着Internet规模的不断扩大,网上的各种知识迅速增长。将移动Agent和上下文知晓相结合,设计了一种移动Agent上下文知晓模型。它能够结合用户的上下文信息,分析用户的实际需求,利用移动Agent去感知、处理和管理上下文信息,从而为用户提供所需的准确知识。最后我们使用Aglet软件平台,具体设计和实现了移动Agent上下文知晓原型系统MABCA,对用户的背景上下文进行了知晓,较好地体现了上下文知晓的特点。 相似文献
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智能人机界面Agent的用户模型及其构建方法 总被引:4,自引:0,他引:4
智能Agent是计算机领域中自适应人机界面需要研究的关键问题之一。文章论述了智能Agent的定义、功能和组成。给出了用户模型的结构框图,探讨了用户模型及其构建方法,并通过实例介绍了几个典型的智能Agent系统。 相似文献
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应用智能Agent技术,针对现有网络教学系统的弱点与不足,结合其原有的优点,进行了网络教学系统的设计。阐述了此系统的总体结构设计和系统设计,总体结构引用三层模型,包括用户层、中间通信层和服务层;在系统设计中给出了用户Agent设计、教学站点设计、移动Agent设计,构造了一个基于Agent技术的网络教学系统模型。 相似文献
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现今Web站点是越来越复杂而且不智能化。用户在访问Web站点时经常会碰到很多问题,主要原因是Web站点对用户的需求缺乏适应性。文中研究了自适应Web站点,提出一个理论框架,并针对此框架给出一个构建自适应Web站点的系统架构,介绍了使用文本挖掘方法和Web用法挖掘方法,改善Web站点的结构和组织形式以使站点达到更好的效果。主要通过挖掘Web服务器日志数据使站点更容易访问。 相似文献
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随着无线网络、移动计算和传感器网络等技术的发展,普适计算的实现逐渐变成可能.普适计算的研究涵盖中间件、移动计算、人机交互、嵌入式技术、传感器等领域,要解决包括扩展性、异构性、构件集成、上下文感知和不可见性在内的关键问题.这些问题中,上下文感知又是重中之重,它使普适计算设备能智能化地解析和使用上下文信息,并根据上下文信息的变化进行动态自适应地调整.现有的大多数上下文感知的研究往往集中于针对上下文信息的适配上,没有考虑如何高效地收集上下文信息.而少数针对上下文收集的研究也只围绕外界环境中部署的传感器信息收集,从而使具有相同上下文信息敏感性的设备将独立而重复地进行上下文收集的工作.因此,本文拓展了传统的上下文收集的途径,并在当前已有的3种上下文共享模型的基础上提出了一种基于分层Agent的上下文共享模型,通过Agent技术和组机制的结合,使用户不仅能从传感器处收集上下文,还能从具有共同兴趣和爱好的用户处获得共享上下文,从而达到了消除冗余上下文收集、提高设备效能的目的. 相似文献
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自适应网站能够提高网站对用户的服务质量。本文首先给出自适应网站的总体框架,对框架中主要模块做详细的分析,包括数据预处理、数据挖掘、页面推荐和站点调整。在数据挖掘模块给出一种有效的识别用户访问模式的算法,该算法利用数据库查询简化频繁最大前向访问路径集的查找,并在此基础上形成频繁访问路径图,为页面推荐和站点调整做好准备。最后给出自适应网站的设计原则。 相似文献
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现今Web站点是越来越复杂而且不智能化。用户在访问Web站点时经常会碰到很多问题,主要原因是Web站点对用户的需求缺乏适应性。文中研究了自适应Web站点,提出一个理论框架,并针对此框架给出一个构建自适应Web站点的系统架构,介绍了使用文本挖掘方法和Web用法挖掘方法,改善Web站点的结构和组织形式以使站点达到更好的效果。主要通过挖掘Web服务器日志数据使站点更容易访问。 相似文献
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《Ergonomics》2012,55(1-3):255-270
The objective of this study was to combine internationalization and localization of Websites and improvement of Website usability with user-centred design methods. This study designed for internationalization and localization of Websites for Asian users, and implemented usability engineering into every phase of Website usability testing, based on the internationalization and localization perspectives of the honeywell.com/your home Website. The first step was to develop the usage scenarios. Three Asian usability specialists carried out one heuristic evaluation session for the current honeywell.com/your home Website. The usability problems were analysed and possible solutions to these problems were discussed. In the next phase, cluster analysis was utilized to test current information architecture. The results provided options for future information architecture development for this Website. Finally, a performance measurement test was conducted to investigate the performance for Asian users. Based on the results, suggestions for improving the Website usability from the localization perspective were provided. The results demonstrate the user-centred design (UCD) approach and stress international and local issues in Website development to Website designers. 相似文献
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The objective of this study was to combine internationalization and localization of Websites and improvement of Website usability with user-centred design methods. This study designed for internationalization and localization of Websites for Asian users, and implemented usability engineering into every phase of Website usability testing, based on the internationalization and localization perspectives of the honeywell.com/your home Website. The first step was to develop the usage scenarios. Three Asian usability specialists carried out one heuristic evaluation session for the current honeywell.com/your home Website. The usability problems were analysed and possible solutions to these problems were discussed. In the next phase, cluster analysis was utilized to test current information architecture. The results provided options for future information architecture development for this Website. Finally, a performance measurement test was conducted to investigate the performance for Asian users. Based on the results, suggestions for improving the Website usability from the localization perspective were provided. The results demonstrate the user-centred design (UCD) approach and stress international and local issues in Website development to Website designers. 相似文献
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A dynamic attribute-based data filtering and recovery scheme for web information processing 总被引:2,自引:2,他引:0
Web data being transmitted over a network channel on the Internet with excessive amount of data causes data processing problems,
which include selectively choosing useful information to be retained for various data applications. In this paper, we present
an approach for filtering less-informative attribute data from a source Website. A scheme for filtering attributes, instead
of tuples (records), from a Website becomes imperative, since filtering a complete tuple would lead to filtering some informative, as well as less-informative, attribute data in the tuple. Since filtered data at the source Website may be of interest to
the user at the destination Website, we design a data recovery approach that maintains the minimal amount of information for
data recovery purpose while imposing minimal overhead for data recovery at the source Website. Our data filtering and recovery
approach (1) handles a wide range of Web data in different application domains (such as weather, stock exchanges, Internet
traffic, etc.), (2) is dynamic in nature, since each filtering scheme adjusts the amount of data to be filtered as needed,
and (3) is adaptive, which is appealing in an ever-changing Internet environment. 相似文献
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基于图文法的动态软件体系结构支撑环境 总被引:6,自引:0,他引:6
使用类型化的属性图及其图文法来直观而形式地刻画软件体系结构和体系结构风格,用图转换来刻画动态体系结构的重配置行为.基于这种刻画,构建了一个动态软件体系结构支撑环境.该环境一方面,通过一个基于图文法的编辑器来支持体系结构图模型的可视化构造和操纵;另一方面,基于内置运行时体系结构技术实现了体系结构图模型在具体系统中的物理实施,并使得图模型上的图转换操作可以自动映射到实际系统的动态重配置上.再加上一系列的辅助设施,形成了一个较为完整的基于图文法的动态软件体系结构支撑环境. 相似文献
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In this paper a reusable multi-agent architecture for intelligent Websites is presented and illustrated for an electronic department store. The architecture has been designed and implemented using the compositional design method for multi-agent systems DESIRE. The agents within this architecture are based on a generic information broker agent model. It is shown how the architecture can be exploited to design an intelligent Website for insurance, developed in co-operation with the software company Ordina Utopics and an insurance company. 相似文献
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网站架构过程中采取的方案,直接决定其可用性、负载能力以及并发性能。从网站演变脉络入手,通过研究网站开发时所需要的相关技术。从应用的角度探讨解决网站面临的高负载和高并发问题的方法,给出一种综合性能较高的网站构架方案。 相似文献
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基于Hash函数和自动恢复技术的网站抗毁系统研究与实现 总被引:3,自引:0,他引:3
文章提出了一种基于Hash函数和自动恢复技术的网站抗毁系统模型,介绍了一个基于该模型的“磐石”网站监控与自动恢复系统的组成结构和实现机制。讨论了该系统实现中的一些关键技术,并介绍了该系统的主要功能和特点及典型应用环境。最后给出了该项目今后的工作方向。 相似文献