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Energy harvesting enables the wireless devices to obtain energy for communication from the ambient environment. A general theme in prior works is to investigate the power scheduling policies to increase the utility ratio of the harvested energy, which arrives at random. One key assumption is the infinite data backlog, which means that as long as there is energy, there is data to transmit. However,...
Latent Dirichlet Allocation (LDA) has been widely applied to text mining. LDA is a probabilistic topic model which processes documents as the probability distribution of topics. One challenging issue in application of LDA is to select the optimal number of topics in LDA model. This paper presents a topic selection method which considers the density of each topic and computes the most unstable topic...
The traditional network simulator don't have the ability of simulation for the process of large-scale network security incidents outbreak, we designed a grid-based Internet worm behavior simulator which is consisted of foreground applications and background analog subsystems in parallel. It makes the most of the benefit of the grid computing capability, resource and task management. The experimental...
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