边端设备上实时更新知识图谱,提升视频异常检测效率与适应性。
Continuous GNN-based Anomaly Detection on Edge using Efficient Adaptive Knowledge Graph Learning
- 通过剪枝、交替、创建节点三阶段动态更新知识图谱。
- 在边缘设备上实现连续学习,无需依赖云端计算。
- 适合资源受限的实时监控场景,如智能安防与暴力检测。
随着各行业对安全解决方案需求的增长,视频异常检测(VAD)在智能监控、证据调查和暴力检测等应用中变得至关重要。传统VAD方法通常依赖于大型预训练模型微调,计算开销大,难以在实时或资源受限环境中部署。为此,MissionGNN提出一种更高效的方法,利用大语言模型(如GPT-4)生成的固定知识图谱(KG)训练图神经网络(GNN),显著降低计算与内存消耗。然而,在动态环境中,行为趋势和数据模式变化频繁,需持续更新KG,而现有方法通常依赖云端计算,不适用于边缘计算。本文提出一种新型框架,可在边缘设备上实现知识图谱的持续自适应更新,克服云依赖问题。该方法通过剪枝、交替、创建节点三阶段过程动态调整KG,实现对数据趋势的实时响应。这种持续学习机制增强了异常检测模型的鲁棒性,使其更适合部署于动态且资源受限的环境。
原文摘要 · Abstract (English)
The increasing demand for robust security solutions across various industries has made Video Anomaly Detection (VAD) a critical task in applications such as intelligent surveillance, evidence investigation, and violence detection. Traditional approaches to VAD often rely on finetuning large pre-trained models, which can be computationally expensive and impractical for real-time or resource-constrained environments. To address this, MissionGNN introduced a more efficient method by training a graph neural network (GNN) using a fixed knowledge graph (KG) derived from large language models (LLMs) like GPT-4. While this approach demonstrated significant efficiency in computational power and memory, it faces limitations in dynamic environments where frequent updates to the KG are necessary due to evolving behavior trends and shifting data patterns. These updates typically require cloud-based computation, posing challenges for edge computing applications. In this paper, we propose a novel framework that facilitates continuous KG adaptation directly on edge devices, overcoming the limitations of cloud dependency. Our method dynamically modifies the KG through a three-phase process: pruning, alternating, and creating nodes, enabling real-time adaptation to changing data trends. This continuous learning approach enhances the robustness of anomaly detection models, making them more suitable for deployment in dynamic and resource-constrained environments.
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