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中文摘要：
分析了在数字指纹系统中引入属性的必要性和可行性。介绍了基于属性权重的关系数据库数字指纹算法，适用于版权保护中的叛逆者追踪。通过把重要的属性赋予高的权重确保实现重要的属性多水印。最后，就抗同谋攻击等分析了算法的性能。实验证明该算法对于各种常见的攻击具有较好健壮性。
英文摘要：
The necessity and the feasibility of introducing attribute weight into digital fingerprinting system are given. The weighted algorithm for fingerprinting relational databases of traitor tracing is proposed. Higher weights are assigned to more significant attributes, so important attributes are more frequently fingerprinted than other ones. Finally, the robustness of the proposed algorithm, such as performance against collusion attacks, is analyzed. Experimental results prove the superiority of the algorithm.
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