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Towards a programming framework for activity-oriented context-aware applications

Frontiers of Computer Science 2017年第6期11卷 987-1006页

作者： Xuansong LI Xianping TAO Jian LU State Key Laboratory for Novel Software Technology Department of Computer Science and Technology Nanjing University Nanjing 210000 China

context-aware system is an emerging research area in recent years. context plays an important role in these systems. In most existing work, context is treated as all rel- ative elements in the environment of an application, and the scope of context is predefined by the developers during the development. However, it is difficult to analyze, specify, and organize everything in the environment accurately and com- pletely; and even when it is possible, the developed applica- tions are difficult to extend or modify as the requests for en- vironment may change over time. In this paper, we focus on activity-oriented context-aware （AOCA） applications where the requests for environment are highly dependent on user activities, and propose a programming framework for devel- oping AOCA applications. In particular, we first present a concept model for describing the notions of activity-oriented context. Next, based on the concept model, we describe the details of the programming framework as well as a develop- ment tool. Moreover, we provide a platform to support the runtime of AOCA applications, and demonstrate the advan- tages of our programming framework through experimental evaluations.

关键词： pervasive computing context-awareness,context-aware programming framework activity-orientedcontext

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