群决策在目标主机安全性能评价中的应用

Application of group decision making in the target computer′s security capability evaluation

针对目标主机安全性能影响因素中评价信息为区间数的不确定性问题,基于方案偏好向量与方案综合向量之间范数最小的原理,构建目标主机安全性能评价因素权重确定模型,解决了包含不确定性信息的目标主机安全性能权重确定问题;运用连续有序加权算子C-OWA将决策信息为区间数的评价信息集结为实数,简化了该模型的运算.计算结果表明该方法实用性强,操作简便,很好处理了目标主机安全性中存在不确定性因素的问题.

According to the fact that the evaluation information is uncertain with interval numbers in the influential factors of target host′s security performance,the model is established to determine the factor weigh in the security performance evaluation of target host which contains uncertain information based on the norms minimum principle between the preference vector and integrate value vector of alternatives.Then,the model is simplified applying the C-OWA operators to aggregate the interval numbers to the real numbers.The calculated results indicate that this method has the characteristics such as strong practicability,simple and convenient operation,and could deal with the uncertain problem very well in the security performance evaluation of target host.