构建多输出极端空间模型,精准预测飞机生产中的极端异常事件。
Multi-output Extreme Spatial Model for Complex Aircraft Production Systems

- 用双空间双线性函数建模控制变量与测量点的极端动态关系。
- 在复合材料飞机生产中,对极端事件的预测性能优于传统方法。
- 适合复杂生产系统中需同时分析多个极端风险的管理者使用。
机器学习数据驱动模型虽已广泛用于生产系统管理,但多数模型仅关注均值或平均模式,难以应对飞机制造中常引发巨额成本的极端异常事件。由于重尾分布下的极端事件带来高昂系统管理代价,亟需先进极端模型分析复杂极端风险。现有工程应用多聚焦单一极端事件,无法满足具有相关性的复杂系统需求。本文提出一种多输出极端空间模型,通过在控制变量与测量位置两个空间域上使用双线性函数,高效捕捉系统动态;研究了边际参数建模与极值依赖结构;并开发基于图辅助的复合似然估计及其计算算法,以应对高维输出。在复合材料飞机生产中的应用表明,该模型在极端事件预测上显著优于经典方法,具备全面分析能力。本方法为复杂生产系统(如飞机制造)提供极端事件预测与风险管控新路径,有助于提升质量管理和运营安全。
原文摘要 · Abstract (English)
Problem definition: Data-driven models in machine learning have enabled efficient management of production systems. However, a majority of machine learning models are devoted to modeling the mean response or average pattern, which is inappropriate for studying abnormal extreme events that are often of primary interest in aircraft manufacturing. Since extreme events from heavy-tailed distributions give rise to prohibitive expenditures in system management, sophisticated extreme models are urgently needed to analyze complex extreme risks. Engineering applications of extreme models usually focus on individual extreme events, which is insufficient for complex systems with correlations. Methodology/results: We introduce an extreme spatial model for multi-output response control systems that efficiently captures the dynamics using a bilinear function on two spatial domains for control variables and measurement locations. Marginal parameter modeling and extremal dependence have been investigated. In addition, an efficient graph-assisted composite likelihood estimation and corresponding computational algorithms are developed to cope with high-dimensional outputs. The application to composite aircraft production shows that the proposed model enables comprehensive analyses with superior predictive performance on extreme events compared to canonical methods. Managerial implications: Our method shows how to use an extreme spatial model for predicting extreme events and managing extreme risks in complex production systems such as aircraft. This can help achieve better quality management and operation safety in aircraft production systems and beyond.
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