中文摘要：

对流程进行比较，在业务流程管理中有着重要的应用价值，可用于流程版本控制、流程相似度计算、流程合并等应用场景当中．流程间的元素映射是流程比较的首要步骤．现有的流程比较方法仅考察了流程任务活动的映射，忽略了流程中其他元素的对应关系，进而无法保障流程比较结果的可靠性．为此，提出一种基于Petri网的流程间元素映射模型，侧重描述了库所映射时所需要满足的上下文环境；随后，在此基础上提出了基于上下文环境的流程问库所映射算法．对于任意给定的两个Petri网建模的流程模型，该算法通过双边和单边映射的策略，优先选择上下文环境相似程度最高的库所作为对应库所返回．大量基于真实数据集的实验展示了该方法在库所映射方面的有效性，也展示了其用于流程相似度计算方面的高效性．

英文摘要：

Comparing processes has important application value in business process management, and it is common in scenarios of process version control, and process similarity calculation, process merging. Mapping elements between process models is the first step for process comparison. Current comparison solutions, however, only consider the mapping between tasks but ignore the correspondence of other elements in the process. Hence, the reliability of the results from the process comparison cannot be guaranteed. To address this issue, this paper first proposes a Petri net based model for element mapping between processes, and focuses on description of the context that is required for places mapping. Then, based on the place mapping context, a mapping algorithm is also presented. For any pair of processes modeled by Petri net, the algorithm adopts bilateral and unilateral mapping strategies where the pair of places that shares the most similar contexts is given high priority to be selected as the mapping result. The extensive experiments based on the real world data sets show the effectiveness of the proposed method as well as its efficiency in the scenario of process similarity search.