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arXiv 2202.11295cs.LGeess.SP
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基于持续学习的概率慢特征多模式动态过程监控

Continual learning-based probabilistic slow feature analysis for multimode dynamic process monitoring

Tsinghua University(清华大学);Shandong University of Science and Technology(山东科技大学);University of Reading(雷丁大学)

Jingxin Zhang, Donghua Zhou, Maoyin Chen, Xia Hong

摘要:

本文提出了一种新的多模动态过程监测方法,通过扩展弹性权重合并(EWC)的概率慢特征分析(PSFA),以提取多模慢特征的在线监测。EWC最初是在顺序多任务的机器学习中引入的,目的是避免灾难性遗忘问题,这同样是多模动态过程监控中的一个主要挑战。当一个新的模式到来时,应该收集一组数据,以便可以通过PSFA和先验知识识别该模式。然后,引入正则化项以防止新数据显著干扰所学习的知识,其中估计参数重要性度量。所提出的方法表示为PSFA-EWC,这是不断更新,能够实现连续模式的优良性能。与传统的多模式监测算法不同,PSFA-EWC具有前向和后向传输能力。保留了以前模式的重要特征,同时合并了新的信息,这可能有助于学习新的相关模式。通过与几种已知方法的比较,以连续搅拌加热炉和实际制粉系统为例,验证了该方法的有效性。

英文摘要:

In this paper, a novel multimode dynamic process monitoring approach is proposed by extending elastic weight consolidation (EWC) to probabilistic slow feature analysis (PSFA) in order to extract multimode slow features for online monitoring. EWC was originally introduced in the setting of machine learning of sequential multi-tasks with the aim of avoiding catastrophic forgetting issue, which equally poses as a major challenge in multimode dynamic process monitoring. When a new mode arrives, a set of data should be collected so that this mode can be identified by PSFA and prior knowledge. Then, a regularization term is introduced to prevent new data from significantly interfering with the learned knowledge, where the parameter importance measures are estimated. The proposed method is denoted as PSFA-EWC, which is updated continually and capable of achieving excellent performance for successive modes. Different from traditional multimode monitoring algorithms, PSFA-EWC furnishes backward and forward transfer ability. The significant features of previous modes are retained while consolidating new information, which may contribute to learning new relevant modes. Compared with several known methods, the effectiveness of the proposed method is demonstrated via a continuous stirred tank heater and a practical coal pulverizing system.

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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