Breaking the Homogeneity Assumption: Specialized Multi-Generator Adversarial Learning for Rare Failure Detection in Predictive Maintenance
作者: Alexis Lazanas, Georgios Kampouropoulos
分类: cs.LG, cs.AI
发布日期: 2026-07-21
💡 一句话要点
提出专用多生成对抗学习以解决预测性维护中的稀有故障检测问题
🎯 匹配领域: 支柱九:具身大模型 (Embodied Foundation Models)
关键词: 生成对抗网络 稀有故障检测 预测性维护 不平衡学习 机器学习 工业数据分析
📋 核心要点
- 现有的不平衡管理方法假设少数类样本是同质的,导致在多样化故障模式下效果不佳。
- 论文提出了一种多生成器GAN架构,旨在独立学习不同故障子类型,从而增强少数类样本的生成。
- 实验结果显示,所提方法在AI4I 2020数据集上实现了更高的PR-AUC和召回率,相较于传统方法有显著提升。
📝 摘要(中文)
在预测性维护领域,监督学习模型通常在高度不平衡的工业数据集上训练,机器故障发生频率低但对操作影响巨大。现有的不平衡管理方法假设少数类是同质的,导致在工业实践中效果有限。本文提出了一种故障类型意识的生成增强程序,通过比较五种不平衡处理方法,验证了多生成器GAN框架在生成更真实的少数样本方面的有效性,实验结果表明该方法在PR-AUC和召回率上优于传统方法。
🔬 方法详解
问题定义:本文旨在解决预测性维护中稀有故障检测的挑战,现有方法在处理高度不平衡和多样化故障模式时效果有限。
核心思路:提出了一种故障类型意识的生成增强程序,利用多生成器GAN架构独立学习不同故障子类型,以提高少数类样本的生成质量。
技术框架:整体架构包括数据预处理、生成器设计、模型训练和评估阶段。每个生成器专注于学习特定的故障模式,生成样本后与原始数据结合进行训练。
关键创新:最重要的创新在于引入多生成器架构,允许模型针对不同故障类型进行专门化学习,克服了传统方法的同质性假设。
关键设计:在设计中,采用了独立的生成器,每个生成器使用特定的损失函数以优化其生成的样本质量,确保生成样本的多样性和真实性。
🖼️ 关键图片
📊 实验亮点
实验结果表明,所提出的多生成器GAN框架在AI4I 2020数据集上实现了更高的PR-AUC和召回率,优于传统的成本敏感学习、随机欠采样、SMOTE过采样和单生成器GAN增强方法,显示出显著的性能提升。
🎯 应用场景
该研究的潜在应用领域包括工业设备的预测性维护、故障检测和智能制造等。通过提高稀有故障的检测能力,可以显著降低设备停机时间和维护成本,提升生产效率,具有重要的实际价值和未来影响。
📄 摘要(原文)
Supervised learning models in the predictive maintenance field are regularly trained on highly imbalanced industrial datasets: machine failures occur rarely but have a disproportionate effect on operations. In addition to the clear class disparity, failure data are typically non-homogeneous, with different failure modes arising from distinct physical processes and exhibiting a multimodal distribution across minorities and classes. Traditional imbalance-management methods, e.g., undersampling, SMOTE-based interpolation, or cost-sensitive learning, typically assume that the minority population is homogeneous. This means their effectiveness is severely limited in the multifaceted conditions encountered in industrial practice. This paper determines the possibility of a failure-type-conscious generative augmentation program to improve the identification of infrequent failures in predictive maintenance systems. An experimental design that is leakage-safe is used to compare five imbalance-handling methods: cost-sensitive learning, random undersampling, SMOTE oversampling, single-generator GAN augmentation, and a specialized multi-generator GAN architecture that has independent generators that are asked to learn individual failure subtypes. Precision/Recall-oriented measures are used to quantify model performance; the main evaluation measure is the PR-AUC. Experiments conducted on the AI4I 2020 predictive maintenance dataset indicate that the proposed multi-generator GAN framework produces more realistic minority samples, yielding higher PR-AUC and recall scores compared to traditional resampling methods and individual-generator GAN augmentation.