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This paper proposes a six-layer conceptual architecture for spontaneous service provision. In the architecture, techniques of context-aware, semantic reasoning and service composition are smoothly synthesized. A dynamic service composition mechanism based on directed attributed graphs is introduced on the basis of functional characteristics of architecture. It maintains a repository of service graphs,...
This paper describes the core of an spontaneous service provision framework offering general functionality based on objects in Internet of Things. The framework supports sensor, wireless network and end system based on services and service features. The framework is more generic than traditional hierarchical sensor and actuator networks framework. It supports grids and spontaneous service provision...
A multilevel trust management framework in pervasive environment is proposed in this paper. In the framework, the trust, the reputation, reciprocity and related concepts are defined newly. The multilevel discrete trust metric finds a good way to solve the problems, which the granularity of binary trust is coarse and the calculation of continuous trust is complex. The design of storage counter in the...
A semantic and automatic framework for network smart space is proposed in this paper. In the framework, techniques of spontaneous service provision, context-aware, semantic reasoning, and pervasive service management are smoothly synthesized. A six-layer conceptual architecture is introduced on the basis of functional characteristics of framework. It enables objects in network smart space to interact...
Chimney-like directory agent service location Protocol and mesh-connection directory agent mesh service location protocol are the two main hybrid service discovery mechanisms. However, it is reasonable to improve network performance by optimizing local unit size from the opinion of both sociology and network optimization. Based on the theory of "small-world network" of Watts and Strogatz,...
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