Strategy of Uncertainty Data Fusion for Context-Awareness
Xiaolong Xu · Computer Technology and Development · 2012
Context-aware computing is a process of fusing sensor data to perceive the user's context information.Considering the uncertainty property of sensor data,it proposes a context-aware data fusion strategy based on the Context Toolkit model,classifying the data fusion into two layers:the lower layer fusion and the high layer fusion.In these two layers,the fuzzy logic theory and DBN data fusion algorithm are used respectively.Simulation results show that this combined approach can not only effectively tackle with the uncertain data and information during the context awareness process,but also improve the fault-tolerance and accuracy of context awareness.