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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)
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)
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