中文摘要：

本文提出了一种基于云模型的主机安全评估方法,该方法全面考虑了影响主机安全的连续型及离散型因素,设计了一套完整的指标因素集,并把离散参数加入云的不确定推理器,从而改进了单纯依靠连续型参数进行评估的推理算法.改进的算法可以实现云的不确定性评估,能解决评估知识表达的不确定性,从而实现定性概念与定量数据之间的不确定性转换,进而为用户提供可靠的决策信息,并通过实验仿真验证了该方法的可行性.

英文摘要：

This paper presents a method of host security assessment based on cloud model.This method comprehensively takes into consideration the continuous and discrete factors affecting host security,and implements a complete index factors set,and the discrete parameters are added into the cloud of uncertain reasoning.The reasoning algorithm based on the evaluation of continuous parameters is improved.By this reasoning algorithm,cloud uncertainty assessment is implemented to solve the uncertainty in assessment knowledge representation,and to realize the uncertainty conversion between qualitative concept and quantitative data,to provide reliable decision-making information to the user.The feasibility of this method is verified through experiment simulation.