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本文介绍一种基于多Agent框架的目标识别技术应用。根据Agent的自治、协作和分布特性,以及Agent的思维状态BDI模型,在Internet/Intranet环境下,设计和构造了多Agent框架MAF,包括MAF中的各Agent组成结构、各Agent间的协作和通信、Agent的知识表达和Agent计算等,提出了绘画式图像分割的策略。 相似文献
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Ainhoa Álvarez Maite Martín Isabel Fernández-Castro Maite Urretavizcaya 《Interactive Learning Environments》2016,24(6):1176-1197
Currently, most of the educational approaches applied to higher education combine face-to-face (F2F) and computer-mediated instruction in a Blended-Learning (B-Learning) approach. One of the main challenges of these approaches is fully integrating the traditional brick-and-mortar classes with online learning environments in an efficient and flexible way. In this paper, we present a set of requirements to be met by a computer system in order to adequately support both students and teachers in a B-Learning context. Then, it defines a suitable conceptual architecture to meet the requirements, and the multi-agent implementation of the architecture. Next, it presents the evaluation of the functionality implemented. Finally some conclusions are drawn. 相似文献
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基于多Agent和CSCW技术,提出了在网络环境下构建一个网上蔬菜批发交易系统,为分布在不同地点的客户和管理者提供协同的虚拟交易环境。详细描述了系统的体系结构、设计思想、Agent的内容结构及系统特征。 相似文献
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INTRODUCTION Autonomous mobile robot is a machine able to extract information from its environment and use knowledge about its world to move safely in a meaningful and purposive manner, it can operate on its own without a human directly controlling it (Ehlert,1999). The primary task of a mobile robot is envi-ronmental navigation as basis for more useful tasks. In contrast to indoor mobile robots and industrial manipulation robots both working in relatively static and structured environme… 相似文献
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以Internet网为基础,提出了一种远程DSP实时实验系统体系,该系统以中心服务器和DSP实验装置为核心组成;支持网上实验服务功能的远程实时实验系统;结合现代网络技术和数字信号处理器技术;采用多用户排队缓冲的机制。设计并实现了专用的实验硬件系统和软件系统,提出了构建远程实验系统的标准化框架和实现方法。 相似文献
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Dynamic architecture of multi-agent systems （MAS） is important for critical systems. As the existing formal specifications of MAS cannot describe its dynamic architecture, a formal approach using n-calculus is presented, which is suited for the describing and analyzing of concurrent MAS with dynamic topology, n-calculus describes the belief-desireintention （BDI） model that represents agent＇s mental states and provides many useful facilities to analyze MAS model such as deadlock, behavior equivalence, and model checking. To illustrate the favorable representation capability of n-calculus, an example of dynamic multi-agent systems in e-commerce is provided. Finally, by using an existing n-calculus supporting tool, MAS model and some key behaviors properties are analyzed and verified. 相似文献
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Dynamic architecture of multi-agent systems (MAS) is important for critical systems. As the existing formal specifications of MAS cannot describe its dynamic architecture, a formal approach using π-calculus is presented, which is suited for the describing and analyzing of concurrent MAS with dynamic topology. π-calculus describes the belief-desireintention (BDI) model that represents agent's mental states and provides many useful facilities to analyze MAS model such as deadlock, behavior equivalence, and model checking. To illustrate the favorable representation capability of π-calculus, an example of dynamic multi-agent systems in e-commerce is provided. Finally, by using an existing π-calculus supporting tool,MAS model and some key behaviors properties are analyzed and verified. 相似文献
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《上海大学学报(英文版)》2007,11(1):58-58
Dynamic architecture of multi-agent systems (MAS) is important for critical systems. As the existing formal specifications of MAS cannot describe its dynamic architecture, a formal approach using $\piup$-calculus is presented, which is suited for the describing and analyzing of concurrent MAS with dynamic topology. $\piup$-calculus describes the belief-desire-intention (BDI) model that represents agent's mental states and provides many useful facilities to analyze MAS model such as deadlock, behavior equivalence, and model checking. To illustrate the favorable representation capability of $\piup$-calculus, an example of dynamic multi-agent systems in e-commerce is provided. Finally, by using an existing $\piup$-calculus supporting tool, MAS model and some key behaviors properties are analyzed and verified. 相似文献
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Torun Granstrøm Ekeland 《Scandinavian Journal of Educational Research》2017,61(3):319-332
The article examines the use of archaeological knowledge in elementary history textbooks used in Norwegian schools today. The aim is to determine whether we can find any traces of colonialism by reviewing how these narratives perform in interrelations within and between the Sámi and Norse pasts, and how the narratives allow for hybridity and heterogeneity. Postcolonial theory turns the narrative into an object of analysis. The findings show that the Sámi material remains are outside the system of cultural change and that the temporal and spatial distances produce binary and homogeneous cultures. New material perspectives can intervene in singular performativity. Learning to enact dynamic material heterogeneity may affect the future of pupils’ participation in cultural negotiations of pastsin present. 相似文献
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董英东 《西南师范大学学报(人文社会科学版)》2009,(5):71-75
认知逻辑处理的是关于知识和信念等认知概念的逻辑性质和关系的问题,多主体的自认知逻辑系统,是在单主体唯一知道逻辑系统的基础上进行的扩充。现将单主体的K45系统扩充为多主体的K45n系统,并介绍了该系统的语法规则和稳定集以及典范模型的语义和证明理论,同时也对该系统的可靠性和完全性进行了证明。 相似文献
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为了解决动态不确定环境下多智能体系统中的规划问题,通过对现有规划系统的分析,提出一种新的分布式规划系统MPOMDPRS,通过保持PRS系统的持续规划机制来适应环境的动态性;通过保持POMDP的概率分布模型来适应环境的不确定性;通过通讯集的添加来满足多智能体系统的需要,仿真实验证明了系统的有效性和实时性,可以满足环境的动态不确定性要求。 相似文献
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The idea of an intelligentsystem to support learning has been epitomisedby that of an intelligent tutoring system(ITS). However, ITSs are, in fact, just aparticular kind of intelligent system tosupport learning whose components reflect thevalues of the particular view that ITSsemphasise in regard to the nature of knowledge,learning and teaching, which have led to anarchitecture that focuses on representing theknowledge to be learned (domain model),inferring the learner's knowledge (learnermodel), and planning instructional steps to thelearner (teaching model). On the other hand,other views of learning may lead to differentneeds in terms of knowledge representation,reasoning, and decision making capabilities inthe intelligent systems that support them.Constructivist views, for example, emphasisedifferent values and may require an entirelydifferent architecture of intelligent system tosupport its philosophy of learning. This paperpresents an architecture of an intelligentsystem to support learning that is able toaddress the issues that arise fromconstructivist theories of learning in a waythat, rather than opposing to the standard ITSarchitecture, characterises a broader view inall its components which can be appropriatelyattuned to address the issues of particularphilosophies. 相似文献
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针对具有时延的二阶多智能体系统领导—跟随异步脉冲一致性问题,假设每个多智能体采样邻接点信息的时刻互不相同,针对无向切换网络拓扑的多智能体系统,提出一种切换拓扑下有领导者的异步脉冲一致性控制协议。首先对该协议进行理论分析;然后构造 Lyapunov 函数,并利用 Lyapunov 稳定性理论与树形转换法给出多智能体系统在该控制协议下达到异步一致的充分条件;最后提出实例并进行 MATLAB 仿真。仿真结果表明,在脉冲控制下跟随者与领导者误差渐进趋于零,验证了该一致性协议有效性。 相似文献
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This paper discusses the place of GTE as an approach for bridging the gap between CAL and ITS systems. DCG is our architecture for dynamic courseware generation, which allows dynamic planning of the contents of an instructional course with a given goal. Finally, a further development of DCG by combining it with GTE is described which includes explicit representation of generic teaching knowledge. This allows dynamic planning of how a selected contents will be presented to the student. 相似文献
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In this paper, we present an intelligent architecture, called intelligent virtual environment for language learning, with embedded pedagogical agents for improving listening and speaking skills of non-native English language learners. The proposed architecture integrates virtual environments into the Intelligent Computer-Assisted Language Learning. This architecture supports visual, auditory, and haptic channels of interaction. It allows pedagogical ideas about language skills to be implemented and validated with a minimum design time. Moreover, we design a computational model to evaluate learner's proficiency level, and an automatic adaptation mechanism which adjusts to the learner's learning curve. We have implemented two scenarios based on the proposed architecture to teach learners how to communicate in public places such as airports and TV stores. Inputs to this system include learner's speech and hand motion, and outputs include graphical scenes, force feedback, and speech by a few embodied agents. Throughout interactions, agents discover the proficiency level of the learner and customize the level of communication complexity accordingly. The system is tested on 10 subjects. Experimental results show 14% increase in the number of proper replies, 3% decrease in grammatical errors, 16% decrease in pronunciation duration, and 11% increase in learners' proficiency level within three trials. 相似文献
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一般的CAI系统采用的是一种存储—显示模式,系统不能动态地调整学习过程以适应不同的需要,而ITS的基本思想是:使基于计算机的教育过程科学化、专业化和自动化。为了实现这一思想,我们提出了一个由辅助教学系统写作环境支持下设计智能教学系统(ITS)的教学策略、实现领域知识表示的方法,并将逻辑模拟ITS写作环境定义为二元组AE=(T,R),进而讨论了逻辑描述、逻辑构造、指令负载描述、操纵逻辑模型运行的模拟机制以及为获取模型相关组织说明的学习机制的设计等问题。 相似文献
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通过文献研究、实证研究和规范分析方法,旨在提出社区教育多元主体办学的法制完善建议。通过研究发现,当前多元主体参与社区教育办学的趋势初显,参与社区教育的多元主体数量和类型日益增多,参与形式途径趋于多样。现行社区教育多元主体办学存在多元主体参与主动性和持续性不足、协同性弱、社会参与制度保障缺失的问题,亟须加强规范设计和制度供给,为各类主体更好地参与社区教育提供法律支撑。研究结论:社区教育多元主体办学的法制完善可以从明确社区教育多元主体办学的价值取向、细化社区教育多元主体办学相关配套制度两个方面着手。 相似文献
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文章针对现在我国俄语教学中发音教学的不足,提出使用自动语音分析技术辅助俄语发音学习,设计了一个具有示范、评分反馈功能的俄语单词发音学习辅助系统。文章详细的描述了系统功能、基本框架,给出了系统实现中的关键技术。最后,使用VC6.0实现了一个演示系统,并进行了简单测试。 相似文献
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Ana Lilia Laureano-Cruces Javier Ramírez-Rodríguez Fernando de Arriaga Rafael Escarela-Pérez 《Interactive Learning Environments》2013,21(2):95-118
Intelligent learning systems (ILSs) have evolved in the last few years basically because of influences received from multi-agent architectures (MAs). Conflict resolution among agents has been a very important problem for multi-agent systems, with specific features in the case of ILSs. The literature shows that ILSs with cognitive or pedagogical agents are prone to arbitration methods, where as ILSs with reactive agents are much in favor of control mechanisms. For these kind of systems, different control types are proposed based on the different stimuli that these agents will receive. These stimuli are aspects to be evaluated during the teaching/learning process such as: (1) error analysis, (2) learning styles, (3) analogies, (4) social aspects, etc. The paper reviews several ILSs, related to our work; different control mechanisms are proposed to solve the agents' intervention conflicts. Finally, the use of several mechanisms is exemplified by the results of a specific ILS. 相似文献