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arXiv 1803.01092cs.AI
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使用自动编码器分析业务流程异常

Analyzing Business Process Anomalies Using Autoencoders

Technische Universität Darmstadt(达姆施塔特工业大学)

Timo Nolle, Stefan Luettgen, Alexander Seeliger, Max Mühlhäuser

摘要:

企业自然有兴趣检测其内部流程中的异常,因为这些可能是欺诈和效率低下的指标。在商业智能领域,经典的异常检测并不是经常被研究。在本文中,我们提出了一种方法,使用自动编码器,检测和分析异常发生在执行业务流程。我们的方法不依赖于任何关于该过程的先验知识,并且可以在已经包含异常的噪声数据集上进行训练。我们通过在700个不同的数据集上对其进行评估并针对三种最先进的异常检测方法测试其性能来证明其有效性。本文是我们2016年工作的延伸[30]。与原始出版物相比,我们在性能方面进一步完善了该方法,并对更复杂的数据集进行了详细的评估,包括2012年和2017年业务流程智能挑战的真实事件日志。在我们的实验中,我们的方法达到了0.87的F1分数,而最好的未改变的最先进的方法达到了0.72的F1分数。此外,我们的方法可以用来分析检测到的异常,在一个执行过程中的事件导致的异常。

英文摘要:

Businesses are naturally interested in detecting anomalies in their internal processes, because these can be indicators for fraud and inefficiencies. Within the domain of business intelligence, classic anomaly detection is not very frequently researched. In this paper, we propose a method, using autoencoders, for detecting and analyzing anomalies occurring in the execution of a business process. Our method does not rely on any prior knowledge about the process and can be trained on a noisy dataset already containing the anomalies. We demonstrate its effectiveness by evaluating it on 700 different datasets and testing its performance against three state-of-the-art anomaly detection methods. This paper is an extension of our previous work from 2016 [30]. Compared to the original publication we have further refined the approach in terms of performance and conducted an elaborate evaluation on more sophisticated datasets including real-life event logs from the Business Process Intelligence Challenges of 2012 and 2017. In our experiments our approach reached an F1 score of 0.87, whereas the best unaltered state-of-the-art approach reached an F1 score of 0.72. Furthermore, our approach can be used to analyze the detected anomalies in terms of which event within one execution of the process causes the anomaly.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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