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Nowadays, spam messages have been overflowing in many countries. They seriously violate personal rights, and may even harm the national security. The existing filtering techniques usually uses traditional text classifiers, which are more suitable to deal with normal long texts, therefore, it often faces some serious challenges, such as the sparse data problem and noise data in the SMS message. This...
In this paper, we study the resource allocation problem in a K-user wireless broadcast system with N-layer superposition coding (SPC). The problem is formulated as a sumutility maximization problem based on the average throughput. Using stochastic approximation, iteratively solving an approximated problem yields the optimality. The approximated problem can be solved by selecting the user group with...
IEEE 802.16 is a promising technology in broadband wireless access area. In multiservice IEEE 802.16 network, connection admission control (CAC) plays a critical role for resource management and QoS guarantee. In this paper, a statistical CAC mechanism is proposed for IEEE 802.16 network. In order to avoid the QoS degradation, the proposed CAC mechanism considers the traffic variability and overflow...
This paper presents a property-preserving component-based methodology for the specification and verification design of the Multi-agent system (MAS). It is assumed that the behavior of each agent in the MAS is specified as a Petri net process (PNP). According to the communication relationships between the agents, the system is specified and verified by applying the composition operators such as Enable,...
The proxy cache for streaming media is the important method to economize the resources of the Internet. The cache policies influence the effect for proxy cache. In this paper, based on the client's request rate, cached the video based on segment, we proposed that the policies for batch, patch and batch patching using dynamic cache. The policies of batch and batch patching using dynamic cache based...
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