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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 ehe simulation results show that our protocol can recognize...
The computer aided rejoining is an advanced technology for the arrangement of the bones or tortoise shells with inscriptions. In this paper, we have studied the algorithms for contour extracting and tracking from these shell images and algorithms for extracting the feature vectors of the contour segments. We established a database for the oracle shell images, and developed a computer aided system...
Data mining is a new filed in data processing research. Support vector machine (SVM) is a useful method adopted in data mining. However, when the training set of the SVM contains information of uncertainty, the SVM can do nothing about it. In order to solve the problem presented above, this article discusses an algorithm of approximately linearly dividable support vector classification machine based...
Data mining is a new filed in data processing research. Support vector machine (SVM) is a useful method adopted in data mining. However, when the training set of the SVM contains information of uncertainty, the SVM can do nothing about it. In order to solve the problem presented above, this article discusses an algorithm of nonlinear support vector classification machine based on fuzzy theory. With...
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