关键词: 校准, 模型修复, 扩展校准, 修复算法

Abstract: To solve the problem of low precision for repairing process model with existing method,a high precision repairing method was proposed.The extended alignments were proposed based on reachable marking of Petri nets to confirm location of deviations.For log moves in extended alignments,the sublogs were collected,and the subprocesses mined by sublogs were inserted into an original model.The method avoided that the subprocesses were added to the original model at the right location by loops.Combined with the process trees of Petri nets,the choice structure of Petri nets could be identified easily by searching non-leaf nodes.A new type of deviation was proposed for choice structures.The method of judging deviations and collecting corresponding sublogs was proposed.Mined subprocesses were added to a proper choice structure of model as some branches.The fitness and precision the proposed methods were illustrated by an example of medical processes data in a hospital of Qingdao.

Key words: alignment, model repair, extended alignment, repairing algorithm