arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2501.02015cs.LGcs.AIcs.SYeess.SPeess.SY
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KANS:用于多变量工业过程软测量的知识发现图注意力网络

KANS: Knowledge Discovery Graph Attention Network for Soft Sensing in Multivariate Industrial Processes

University of Twente(特文特大学);Wright State University(莱特州立大学)

Hwa Hui Tew, Gaoxuan Li, Fan Ding, Xuewen Luo, Junn Yong Loo, Chee-Ming Ting, Ze Yang Ding, Chee Pin Tan

AI总结:

针对工业多变量过程的非线性、动态性和非欧依赖问题,提出KANS框架,通过无监督图结构学习与图注意力表征学习实现无需预定义拓扑的高精度、可解释软测量。

摘要:

难测量变量的软测量在工业过程中通常至关重要。当前实践严重依赖传统建模技术,这些技术在提升精度方面取得了成功。然而,它们忽视了复杂过程变量之间的非线性本质、动态特征以及非欧几里得依赖关系。为应对这些挑战,我们提出了一个名为用于高效软测量的知识发现图注意力网络(Knowledge discovery graph Attention Network for effective Soft sensing,KANS)的框架。与现有深度学习软测量模型不同,KANS无需预定义拓扑即可发现多变量工业过程之间的内在关联和不规则关系。首先,引入一种无监督图结构学习方法,融合不同传感器嵌入之间的余弦相似度,以捕获传感器之间的相关性。接着,提出基于图注意力的表征学习,可并行计算多变量数据,从而增强模型对复杂传感器节点和边的学习能力。为充分探究KANS,还开展了知识发现分析,以证明模型的可解释性。实验结果表明,KANS在软测量性能上显著优于所有基线方法和最先进方法。此外,分析表明,KANS能够在没有领域知识的情况下找到与不同过程变量密切相关的传感器,显著提高软测量精度。

英文摘要:

Soft sensing of hard-to-measure variables is often crucial in industrial processes. Current practices rely heavily on conventional modeling techniques that show success in improving accuracy. However, they overlook the non-linear nature, dynamics characteristics, and non-Euclidean dependencies between complex process variables. To tackle these challenges, we present a framework known as a Knowledge discovery graph Attention Network for effective Soft sensing (KANS). Unlike the existing deep learning soft sensor models, KANS can discover the intrinsic correlations and irregular relationships between the multivariate industrial processes without a predefined topology. First, an unsupervised graph structure learning method is introduced, incorporating the cosine similarity between different sensor embedding to capture the correlations between sensors. Next, we present a graph attention-based representation learning that can compute the multivariate data parallelly to enhance the model in learning complex sensor nodes and edges. To fully explore KANS, knowledge discovery analysis has also been conducted to demonstrate the interpretability of the model. Experimental results demonstrate that KANS significantly outperforms all the baselines and state-of-the-art methods in soft sensing performance. Furthermore, the analysis shows that KANS can find sensors closely related to different process variables without domain knowledge, significantly improving soft sensing accuracy.

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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