摘要： D-S证据理论具有良好的不确定信息决策融合能力，但存在木桶效应问题。为此，提出一种基于变权证据合成的信息安全评估方法，采用证据所对应指标的安全风险程度自适应地调整状态变权向量，根据证据向低安全级的倾斜程度确定权重系数，并通过DS规则实现证据聚合。实验结果表明，与原方法相比，改进方法能给出更合理的评估结果。

关键词: 信息安全评估, D-S证据理论, 状态变权向量, 安全风险等级, DS规则

Abstract: D-S evidence theory can be used for uncertain information decision fusion effectively, but there is a problem of cannikin effect. This paper proposes an information security evaluation method based on aggregation of variable weight evidence. It adjusts state variable weight vector adaptively in accordance with the security risk degree of indexes corresponding to evidences, distributes new weights depending on the approximation degree between evidence and low security level, and realizes aggregation using DS rule. Comparison experiments confirm that the proposed method can acquire more reasonable evaluation results.

Key words: information security evaluation, D-S evidence theory, state variable weight vector, security risk scale, DS rule

中图分类号: 

• TP391