To reveal the mechanism of information loss in the flow of safety information, and to derive an evaluation method for describing this information loss, this paper analyzes the flow of safety information based on research in safety informatics and cognitive psychology. Theoretical analysis shows that the flow of safety information can be divided into four stages: transformation, transmission, perception, and cognition. This paper describes a simplified model of the flow of safety information based on these four stages. Then, the concept of adaptive subjects is introduced, and the sources and losses of safety information are explored. In addition, a model of safety information flow loss is constructed. This model is used to analyze the connection between the information loss at each stage of the sharing process, and then a “ladder hierarchical” model for the loss of safety information is developed. Comprehensive analysis of this ladder hierarchical model of safety information leads to a formal mathematical model of safety information loss. Finally, according to the various development stages of the safety information sharing process, four key factors that affect the multilevel information loss of the safety information sharing process are extracted by the hierarchical method.

为了揭示安全信息流中信息丢失的机制，并推导描述这种信息丢失的评估方法，本文在安全信息学和认知心理学研究的基础上，对安全信息流进行了分析。理论分析表明，安全信息流可以分为四个阶段：转换，传递，感知和认知。本文基于这四个阶段描述了安全信息流的简化模型。然后，介绍了自适应主体的概念，并探讨了安全信息的来源和损失。另外，建立了安全信息流失模型。该模型用于分析共享过程各个阶段的信息丢失之间的联系，然后开发了一个用于损失安全信息的“阶梯式分层”模型。对安全信息梯形层次模型的全面分析导致形成了安全信息丢失的形式化数学模型。最后，根据安全信息共享过程的各个发展阶段，通过分层方法提取了影响安全信息共享过程中多级信息丢失的四个关键因素。