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In the context-awareness problems, classification models are used to recognize the user scenes based on the sensor signal data. To improve the classification accuracy, a Dynamic Key Context Information Based scenes recognition method is proposed in this paper. Since the location information can be easily obtained by the sensors, the data set is divided into groups by their location information. An...
Cloud computing provides the possibility of a solution to the problems caused by the massive amounts of data. As an open source cloud computing platform, Hadoop has been widely used in the commercial. MapReduce model is one of the important parts of Hadoop, and it can support parallel computing and schedule tasks automatically. Because of these, it can improve the efficiency of the configuration while...
With active node' s opening to active application, Security has become a crucial aspect in active network. This paper proposed an extended RBAC model for active network to protect active nodes. By enforcing dynamic authorization as well as fine-grained management of resource, the access control policy provides the required flexibility of active network security management for customized services.
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