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Analysis Of Workflow Dynamic Changes Based On Petri Net

机译：基于Petri网的工作流动态变化分析

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Dynamic adaptability has become one of the major research topics in the area of workflow management system. When adjusting a workflow process to some structural changes, there is a potential problem: the new workflow may contain errors, such as deadlock, inconsistency and even loss of instance. This paper primary addresses the issues related to workflow structural changes. It firstly defines a class of structural change called compatible change. This kind of change can be applied to the workflow process, without causing any structural errors or behavioral inconsistencies. Secondly, an algorithm is put forward to calculate the minimal region affected by the changes. Furthermore, it proves that the change regions can be used to check the compatibility of workflow changes. This approach is applicable and efficient in terms of time and space for large-scale and complex systems. Lastly, this paper discusses the problem to decide whether an active workflow instance can be smoothly evolved to the new workflow, and provides a sufficient condition for valid migration. In the end, an example is given to illustrate the effectiveness of the proposed concepts and method.
机译：动态适应性已成为工作流管理系统领域的主要研究主题之一。在将工作流程调整为某些结构更改时，存在潜在的问题：新的工作流程可能包含错误，例如死锁，不一致甚至丢失实例。本文主要解决与工作流程结构更改有关的问题。它首先定义了一类结构变化，称为兼容变化。可以将这种更改应用于工作流程，而不会引起任何结构错误或行为不一致。其次，提出了一种算法来计算受变化影响的最小区域。此外，证明了变更区域可用于检查工作流变更的兼容性。就大型复杂系统的时间和空间而言，此方法适用且高效。最后，本文讨论了确定活动的工作流实例是否可以平稳过渡到新工作流的问题，并为有效迁移提供了充分的条件。最后，给出一个例子来说明所提出的概念和方法的有效性。

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