一句话：为上下文相关事件结构提出相应的 Petri 网表示，用上下文弧操作式刻画依赖关系。
在依赖关系随系统演化而变化的复杂分布式系统中，事件的执行可用上下文相关事件结构建模，而事件结构与 Petri 网关系密切。该文研究如何为上下文相关事件结构找到合适的 Petri 网对应物，从而以操作式方式表示其中的依赖。传统 Petri 网通常用活动产生并被其他活动消费的 token 表示依赖；本文转变视角，采用上下文弧来刻画截至目前已经发生的事件，并据此描述各活动之间的依赖。通过这一构造，论文为上下文相关事件结构中的依赖提供了新的操作表示，并建立了其与 Petri 网语义之间的联系。摘要未报告实验评估。
The execution of an event in a complex and distributed system where the dependencies vary during the evolution of the system can be represented in many ways, and one of them is to use Context-Dependent Event structures. Event structures are related to Petri nets. The aim of this paper is to propose what can be the appropriate kind of Petri net corresponding to Context-Dependent Event structures, giving an operational flavour to the dependencies represented in a Context/Dependent Event structure. Dependencies are often operationally represented, in Petri nets, by tokens produced by activities and consumed by others. Here we shift the perspective using contextual arcs to characterize what has happened so far and in this way to describe the dependencies among the various activities.