用大模型让工业异常检测无需训练也能自适应,支持多模态输入。
AAD-LLM: Adaptive Anomaly Detection Using Large Language Models
- 不需训练或微调,直接利用大模型理解工业数据
- 在数据稀缺场景下实现高精度异常识别,提升检测有效性
- 支持语义增强输入,适合工厂与模型协同决策
针对数据受限、复杂动态的工业环境,亟需可迁移、多模态的异常检测方法以预防系统故障带来的成本。传统预测性维护(PdM)方法往往缺乏可迁移性和多模态能力。本文探索使用大语言模型(LLMs)进行复杂动态制造系统的异常检测,旨在通过引入大模型提升检测模型的可迁移性,并验证其在数据稀疏场景下的有效性。研究还通过语义增强输入数据,促进模型与现场操作员的协作决策;并集成自适应机制应对动态环境中的概念漂移问题。文献综述梳理了大模型时序任务及自适应异常检测的最新进展,构建了理论基础。本文提出新型框架AAD-LLM,无需在目标数据集上训练或微调,具备多模态特性。结果表明,异常检测可转化为“语言”任务,在数据受限场景下实现上下文感知的高效检测,显著推动了异常检测方法的发展。
原文摘要 · Abstract (English)
For data-constrained, complex and dynamic industrial environments, there is a critical need for transferable and multimodal methodologies to enhance anomaly detection and therefore, prevent costs associated with system failures. Typically, traditional PdM approaches are not transferable or multimodal. This work examines the use of Large Language Models (LLMs) for anomaly detection in complex and dynamic manufacturing systems. The research aims to improve the transferability of anomaly detection models by leveraging Large Language Models (LLMs) and seeks to validate the enhanced effectiveness of the proposed approach in data-sparse industrial applications. The research also seeks to enable more collaborative decision-making between the model and plant operators by allowing for the enriching of input series data with semantics. Additionally, the research aims to address the issue of concept drift in dynamic industrial settings by integrating an adaptability mechanism. The literature review examines the latest developments in LLM time series tasks alongside associated adaptive anomaly detection methods to establish a robust theoretical framework for the proposed architecture. This paper presents a novel model framework (AAD-LLM) that doesn't require any training or finetuning on the dataset it is applied to and is multimodal. Results suggest that anomaly detection can be converted into a "language" task to deliver effective, context-aware detection in data-constrained industrial applications. This work, therefore, contributes significantly to advancements in anomaly detection methodologies.
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