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DOI:
Journal of Software:2009.20(zk):40-50

智能影子(SmartShadow):一个普适计算模型
潘纲,张犁,李石坚,吴朝晖
(浙江大学 计算机科学与技术学院,浙江 杭州 310027)
SmartShadow: A Model of Pervasive Computing
PAN Gang,ZHANG Li,LI Shi-Jian,WU Zhao-Hui
()
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Received:September 20, 2008    Revised:April 09, 2009
> 中文摘要: 普适计算是一种全新的计算模式,目前对普适计算建模的研究较少.尝试以用户为中心将普适计算环境建模为一个“智能影子”模型.该模型建立在用户建模及普适服务抽象的基础上,通过用户BDP模型,将普适环境映射成一个以用户为中心的高度动态的移动的虚拟个人空间,也称“智能影子”,与物理世界的影子一样跟随用户,如影相随.其中,用户BDP模型根据信念(belief)推理出用户意图(desire),并对普适服务的计算过程进行规划(plan).普适服务用来抽象信息空间中的计算资源,可被用户BDP组织,完成用户的意图,组织的过程即为智能影子的映射过程.智能影子模型在逻辑上简单、自然,且可灵活处理普适计算空间的动态变化.另外,还实现了一个仿真原型系统,对模型的可行性进行了验证.
Abstract:Pervasive computing is becoming an emerging paradigm of computing, however currently there is little work addressing pervasive computing model. The goal of this paper is to model a pervasive computing environment as a user-centric “SmartShadow” using the BDP (Belief-Desire-Plan) user model, which maps pervasive computing environments into a dynamic virtual user space. In the BDP model, desires of a user are inferred from his belief set, and plans are made to satisfy each desire. Pervasive services are used to describe computing capabilities of the cyberspace, which can be organized by the user’s BDP to accomplish his/her desires. A composition process casts pervasive services into a user’s SmartShadow. The SmartShadow will follow a user to provide the user with pervasive services, like one’s shadow in the physical world. The proposed model is logically natural, and can flexibly deal with dynamics of pervasive computing spaces. This paper also implements a simulation system to evaluate the SmartShadow model.
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基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60525202, 60533040, 60803109 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant Nos.2009AA011900, 2008AA01Z132 (国家高技术研究发展计划(863)); the Zhejian Supported by the National Natural Science Foundation of China under Grant Nos.60525202, 60533040, 60803109 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant Nos.2009AA011900, 2008AA01Z132 (国家高技术研究发展计划(863)); the Zhejian
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潘 纲,张 犁,李石坚,吴朝晖.智能影子(SmartShadow):一个普适计算模型.软件学报,2009,20(zk):40-50

PAN Gang,ZHANG Li,LI Shi-Jian,WU Zhao-Hui.SmartShadow: A Model of Pervasive Computing.Journal of Software,2009,20(zk):40-50