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	Towards an automata-based semantic web services composition method in context-aware environment
	Zhang, Zhichao ; Li, Weiping ; Wu, Zhonghai ; Tan, Wei
	2012
英文摘要	This paper proposes a service automaton to proactively provide services to users in a context aware pervasive system. First, a context space (CSP) model is proposed based on conceptual space theory, and this model deals with context, situation, services and user preferences in a unified way. In CSP, situation is used to depict the specific scene faced by a user; user preferences can be deemed as a basis to predict the user desired goal situation; to derive a service composition that achieves a given goal, we formalize semantic web services as automata with an emphasize on the relations among contexts and services. Afterwards a composite service automaton (CSA) is defined to synthesis services into a global automata and support the service composition to achieve the goal situation. At last, a temperature control case in smart homes is illustrated to validate the model and approach. The example shows that the service automata can conveniently reflect the state transition of a context aware system from a global perspective and help user achieve the goal situation. ? 2012 IEEE.; EI; 0
语种	英语
DOI标识	10.1109/SCC.2012.27
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/294660]
专题	信息科学技术学院 软件与微电子学院
推荐引用方式 GB/T 7714	Zhang, Zhichao,Li, Weiping,Wu, Zhonghai,et al. Towards an automata-based semantic web services composition method in context-aware environment. 2012-01-01.

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