The research procedures of event tree analysis are to determine the initial event, list events in the process, chart and analyze event tree.

事件树分析法的研究步骤包括确定初始事件、环节事件，绘制、分析事件树图。

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Comparing with SNA method, this analysis process realizes quantitative analysis of survivability, and the event database in the process makes the analysis more simple and fair.

与SNA方法相比，该分析流程实现了可生存性的定量分析，而且分析流程中引入了事件库，简化了分析的工作量并提高了分析的公正性。

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The models about the analysis of recurrent event datas contain two sides. In one side, for intensity process, we construct the model of intensity function and hazards function.

对复发事数据分析的模型包含两个方面：一方面，基于强度过程，对强度函数和危险率函数进行建模。

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