Main focus of database security research is maintaining data security and providing timely data services. Toensure security, inference attack and aggregate attack are the problems, which should be solved. But these wi...
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Main focus of database security research is maintaining data security and providing timely data services. Toensure security, inference attack and aggregate attack are the problems, which should be solved. But these will leavevolumes of data to discover some useful knowledge, and some data mining methods used in this field will bring forthsome positive or even negative results. In this paper, we survey what data mining has done on database security andpresent some open problems and possible future research directions.
User adaptation is a critical and important problem. For users' specialization, such as Handwriting, Voice,Drawing Styles, the system is hard to adapt to all users. SVM-based incremental learning can find the most...
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User adaptation is a critical and important problem. For users' specialization, such as Handwriting, Voice,Drawing Styles, the system is hard to adapt to all users. SVM-based incremental learning can find the most basic fea-ture of different users and cast away the special user's character, so this method can adapt the different users withoutover fitting. In this paper, the repetitive learning strategy and other two incremental learning algorithms are presentedfor comparison. Based on theoretical analysis and experimental results, we draw the conclusion that SVM-based incre-mental learning can solve the user conflict problem.
With the development of e-commerce, people are attaching more importance to biometrics authenticationtechniques. Dynamic handwritten signature verification is an effective one. This paper introduces the basic process ...
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With the development of e-commerce, people are attaching more importance to biometrics authenticationtechniques. Dynamic handwritten signature verification is an effective one. This paper introduces the basic process ofdynamic handwritten signature verification, some algorithms in use and performance evaluation.
There are so many multimedia resources now. But it is difficult to look for any video thing amongthem. MPEG-4 is a major technique used for video coding. In the paper,some methods based on MPEG-4 coding stan-dard for ...
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There are so many multimedia resources now. But it is difficult to look for any video thing amongthem. MPEG-4 is a major technique used for video coding. In the paper,some methods based on MPEG-4 coding stan-dard for video retrival are introduced. The focus is on converting video data to textual data,then video retrival is con-verted to textual retrival. XML technique is involved naturally.
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