arXiv:2602.14523cs.CV2026-02

优化器比模型架构更关键,让灾后建筑损毁识别准确率提升38点

Architectural Insights for Post-Tornado Damage Recognition

  • 用79个模型在2300次实验中测试,发现优化器选择比模型结构影响更大
  • 换用SGD+1e-4学习率后,Transformer模型F1最高提升38点
  • 最佳方案跨事件泛化强,实测在新数据上达46.4%宏F1

龙卷风过后快速准确评估建筑损毁对搜救、资源调配和社区恢复至关重要。但现有自动方法因灾后影像与预训练数据存在严重领域偏移,且真实灾害数据极端类别不平衡而表现不佳。为此,我们构建了新的Quad-State Tornado Damage (QSTD)基准数据集,系统评估79个开源深度模型(含CNN与Vision Transformer)在超过2300次实验中的表现。结果表明,达到实用级性能的关键在于架构与优化的协同作用,而非单纯选型。最显著发现是:将优化器从Adam切换为SGD,使Vision Transformer和Swin Transformer的F1得分提升25至38点,使其排名从末位跃升至媲美顶尖CNN。此外,1×10⁻⁴的学习率在所有架构上平均提升F1 10.2点。最优模型ConvNeXt-Base在优化设置下,于保留的Tuscaloosa-Moore Tornado Damage (TMTD)数据集上实现46.4%宏F1(较基线提升34.6点),并保持85.5%序数Top-1准确率,展现良好跨事件泛化能力。

原文摘要 · Abstract (English)

Rapid and accurate building damage assessment in the immediate aftermath of tornadoes is critical for coordinating life-saving search and rescue operations, optimizing emergency resource allocation, and accelerating community recovery. However, current automated methods struggle with the unique visual complexity of tornado-induced wreckage, primarily due to severe domain shift from standard pre-training datasets and extreme class imbalance in real-world disaster data. To address these challenges, we introduce a systematic experimental framework evaluating 79 open-source deep learning models, encompassing both Convolutional Neural Networks (CNNs) and Vision Transformers, across over 2,300 controlled experiments on our newly curated Quad-State Tornado Damage (QSTD) benchmark dataset. Our findings reveal that achieving operational-grade performance hinges on a complex interaction between architecture and optimization, rather than architectural selection alone. Most strikingly, we demonstrate that optimizer choice can be more consequential than architecture: switching from Adam to SGD provided dramatic F1 gains of +25 to +38 points for Vision Transformer and Swin Transformer families, fundamentally reversing their ranking from bottom-tier to competitive with top-performing CNNs. Furthermore, a low learning rate of 1x10^(-4) proved universally critical, boosting average F1 performance by +10.2 points across all architectures. Our champion model, ConvNeXt-Base trained with these optimized settings, demonstrated strong cross-event generalization on the held-out Tuscaloosa-Moore Tornado Damage (TMTD) dataset, achieving 46.4% Macro F1 (+34.6 points over baseline) and retaining 85.5% Ordinal Top-1 Accuracy despite temporal and sensor domain shifts.

灾后评估视觉识别模型优化灾难响应

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