信息系统生存性分析模型研究

基于信息系统的开放复杂性,将整个生存性分析问题划分为环境、系统以及具体分析过程三个方面并分别进行建模:利用工作流的概念,提出了系统的层次模型;利用事件情景来表示环境对系统的作用,并通过事件分级以及不同级别事件集的分布权值调整表示各种环境;提出了基于FSM的分析过程模型,通过系统状态的层次结构,将传统的基于系统状态的直接分析转化为间接的层次分析。事件的量化使得该分析模型具有一定的量化分析应用前景。

Research on analysis model of information systems survivability

As information systems were open and complex,the entire problem of survivability analysis was divided into three aspects,i.e.environment,system and analysis process,and models of these aspects were given: system hierarchical model was provided based on the concept of workflow;event scenarios were used to describe the impact of environment on systems,and the environment was presented by grading event and adjusting distribution rate of the event set in different grade;based on FSM,system hierarchical state was provided,which converted the traditional direct survivability analysis based on system state into indirect hierarchical analysis.This analysis model can be applied in quantitative analysis of system survivability because of its event quantification.