arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.02171cs.LGstat.ML
收藏

一个基于CASTO的多模态多变量时间序列验证框架,通过无监督深度学习增强,作为工业4.0的推动者

A Causal-based Framework for Multimodal Multivariate Time Series Validation Enhanced by Unsupervised Deep Learning as an Enabler for Industry 4.0

Paul Wurth S.A.(保罗沃思股份公司)

Cedric Schockaert

摘要:

多模态多变量时间序列的高级概念验证框架定义了从单变量上下文定义到自动编码器从异构数据(图像、时间序列、声音等)学习的多模态抽象上下文表示的多级上下文异常检测。与工业过程相关。框架的每一级都适用于历史数据和/或实时数据。最终层次是基于因果发现来识别观测数据中的因果关系,以排除有偏见的数据来训练机器学习模型,并为领域专家提供在数据样本所代表的底层过程中发现未知因果关系的方法。一个长短期记忆自动编码器成功地评估多变量时间序列,以验证与高炉的多个资产的抽象上下文的学习表示。确定了一个研究路线图,将因果发现和表示学习相结合,作为应用于过程工业的无监督根本原因分析的推动者。

英文摘要:

An advanced conceptual validation framework for multimodal multivariate time series defines a multi-level contextual anomaly detection ranging from an univariate context definition, to a multimodal abstract context representation learnt by an Autoencoder from heterogeneous data (images, time series, sounds, etc.) associated to an industrial process. Each level of the framework is either applicable to historical data and/or live data. The ultimate level is based on causal discovery to identify causal relations in observational data in order to exclude biased data to train machine learning models and provide means to the domain expert to discover unknown causal relations in the underlying process represented by the data sample. A Long Short-Term Memory Autoencoder is successfully evaluated on multivariate time series to validate the learnt representation of abstract contexts associated to multiple assets of a blast furnace. A research roadmap is identified to combine causal discovery and representation learning as an enabler for unsupervised Root Cause Analysis applied to the process industry.

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。

↑