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arXiv 2109.03501cs.LGcs.AI
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我该如何更新我的模型?论预测性流程监控模型对变化的鲁棒性

How do I update my model? On the resilience of Predictive Process Monitoring models to change

Fondazione Bruno Kessler (FBK)(布鲁诺·凯斯勒基金会);Free University of Bozen-Bolzano(博尔扎诺自由大学)

Williams Rizzi, Chiara Di Francescomarino, Chiara Ghidini, Fabrizio Maria Maggi

AI总结:

针对现有预测性流程监控模型无法随新案例更新、难以应对真实环境流程变化的问题,研究评估了三种支持模型定期重建或增量构建的策略,证实了增量学习在该场景下的应用潜力。

摘要:

现有已得到充分研究的预测性流程监控技术通常基于过往流程执行构建预测模型,随后用其预测新的正在进行的案例的未来走向,却无法在新案例执行完成后用这些案例更新模型。这会导致预测性流程监控过于僵化,难以应对真实环境中持续演化、或随时间推移呈现新变体行为的流程的可变性。针对这一问题,我们评估了三种不同策略的应用效果,这些策略支持定期重新发现或增量构建预测模型,从而利用新获取的数据。评估围绕新学习得到的预测模型相较于原始模型在准确率和耗时方面的性能展开,使用了多个包含及不包含显式概念漂移(Concept Drift)的真实与合成数据集。研究结果证实了增量学习算法在真实环境中用于流程监控预测的潜力。

英文摘要:

Existing well investigated Predictive Process Monitoring techniques typically construct a predictive model based on past process executions, and then use it to predict the future of new ongoing cases, without the possibility of updating it with new cases when they complete their execution. This can make Predictive Process Monitoring too rigid to deal with the variability of processes working in real environments that continuously evolve and/or exhibit new variant behaviours over time. As a solution to this problem, we evaluate the use of three different strategies that allow the periodic rediscovery or incremental construction of the predictive model so as to exploit new available data. The evaluation focuses on the performance of the new learned predictive models, in terms of accuracy and time, against the original one, and uses a number of real and synthetic datasets with and without explicit Concept Drift. The results provide an evidence of the potential of incremental learning algorithms for predicting process monitoring in real environments.

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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