计算机科学 ›› 2019, Vol. 46 ›› Issue (2): 321-326.doi: 10.11896/j.issn.1002-137X.2019.02.049
郝惠晶, 方贤文, 王丽丽, 刘祥伟
HAO Hui-jing, FANG Xian-wen, WANG Li-li, LIU Xiang-wei
摘要： 低频行为模式分析是流程管理的重要内容之一,有效区分低频日志和噪音日志在业务流程过程挖掘中显得尤为重要。目前已有的研究大部分是将流程模型中的低频行为当作噪音直接过滤,但有些低频行为对模型是有效的。文中提出了基于Petri网行为紧密度的有效低频模式分析方法。首先,根据给定的事件日志建立合理的流程模型;然后,通过迭代扩展初始模式来发现流程模型中的所有低频日志序列,并在此基础上计算日志与模型的行为距离向量,利用日志与模型的行为紧密度找出有效的低频行为模式;最后,通过实例分析验证了所提方法的可行性。
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