摘要： 在基于灰色关联分析的隐写分析算法评估过程中,针对权值分配不合理的问题,采用标准间重要性相关性方法确定各指标的初始权重,结合决策情况对待主动修改的指标权重进行增减,并将这些增减的权重平均分配给被动变化的指标,从而实现对权重的调整,得到各指标的最终权值。运用灰色关联分析法计算各个待评价对象与最优序列之间的加权灰色关联度,并依据加权关联度的大小完成对隐写分析算法的评估。仿真结果表明,与其他隐写分析算法相比,该方法能更加有效地评估各类隐写分析算法的优劣。

关键词: 隐写分析, 算法性能评估, 标准间重要性相关性权, 灰色关联分析, 权值分配

Abstract: Aiming at the problem of unreasonable distribution of weights in the evaluation process of steganography analysis algorithm based on grey relational analysis,Criteria Importance Through Intercriteria Correlation(CRITIC) method is used to determine the initial weights of each index.The weights of the active modifying indexes are increased or decreased,and then equally distributed to the passive indexes according to the actual decision.The final weights of each index are obtained by adjusting.Grey relational analysis is used to calculate the weighted grey correlation degree between each object to be evaluated and the optimal sequence.The steganography analysis algorithm is evaluated by the correlation value.Simulation results show that the proposed method can evaluate various kinds of steganography analysis algorithm more effectively than other steganography analysis algorithms.

Key words: steganography analysis, algorithm performance evaluation, Criteria Importance Through Intercriteria Correlation(CRITIC) weight, grey relational analysis, weight distribution

中图分类号: 

• TP301.6