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In Ad Hoc networks, some malicious nodes broadcast plenty of useless route request packets in order to occupy the resources. To prevent these flood attacks. This paper proposed a improved protocol mechanism including validity test and packets buffer. Then this mechanism has been implemented based on protocol AODV in Network Simulator (NS) and the simulation(More)
Chinese word segmentation is the initial step for Chinese information processing. The performance of Chinese word seg-mentation has been greatly improved by character-based approaches in recent years. This approach treats Chinese word segmentation as a character-word-position-tagging problem. With the help of powerful sequence tagging model, character-based(More)
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