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arXiv 2003.10707cs.SE
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过程挖掘中事件重复识别风险的量化

Quantifying the Re-identification Risk of Event Logs for Process Mining

S. Nuñez von Voigt, S. A. Fahrenkrog-Petersen, D. Janssen, A. Koschmider, F. Tschorsch, F. Mannhardt, O. Landsiedel, M. Weidlich

摘要:

在业务流程执行期间记录的事件日志构成了一个有价值的信息源。应用过程挖掘技术,事件日志可以揭示实际的过程执行,并使定量或定性的过程属性的推理。但是,事件日志通常包含敏感信息,这些信息可能通过背景信息和互相关与各个流程涉众相关。因此,我们认为,在发布事件日志时,必须考虑这种重新识别攻击的风险。在本文中,我们展示了如何量化的重新识别风险的措施,在事件日志中的个人的唯一性。我们还报告了一项大规模的研究,探讨了个人的独特性,在收集公开的事件日志。我们的研究结果表明,潜在的事件日志中的所有情况下,可能会被重新识别,这突出了隐私保护技术在流程挖掘的重要性。

英文摘要:

Event logs recorded during the execution of business processes constitute a valuable source of information. Applying process mining techniques to them, event logs may reveal the actual process execution and enable reasoning on quantitative or qualitative process properties. However, event logs often contain sensitive information that could be related to individual process stakeholders through background information and cross-correlation. We therefore argue that, when publishing event logs, the risk of such re-identification attacks must be considered. In this paper, we show how to quantify the re-identification risk with measures for the individual uniqueness in event logs. We also report on a large-scale study that explored the individual uniqueness in a collection of publicly available event logs. Our results suggest that potentially up to all of the cases in an event log may be re-identified, which highlights the importance of privacy-preserving techniques in process mining.

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