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Uninformed Students: Student-Teacher Anomaly Detection With Discriminative Latent Embeddings

CVPR 2020 · Detection and segmentation › Open-set and few-shot detection · approach: Industrial anomaly detection · 914 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use student-teacher regression on pretrained discriminative embeddings for anomaly segmentationMVTec AD · MVTec ADnormalized area under PRO curve: 0.790 -> 0.857Helped
Combine anomaly scores from receptive fields p=17, 33, and 65 (ablation)Student-teacher · MVTec ADnormalized area under PRO curve: 0.857 -> 0.914Helped
Add descriptor compactness loss Lc to knowledge-distillation loss Lk (ablation)Student-teacher teacher embeddings · CIFAR-10ROC-AUC: 0.8021 -> 0.8196Helped
Add descriptor compactness loss Lc to knowledge-distillation loss Lk (ablation)Student-teacher teacher embeddings · MNISTROC-AUC: 0.9917 -> 0.9935Helped
Add triplet metric-learning loss Lm to Lk + Lc (ablation)Student-teacher teacher embeddings · CIFAR-10ROC-AUC: 0.8196 -> 0.8035Hurt
Add triplet metric-learning loss Lm to Lk + Lc (ablation)Student-teacher teacher embeddings · MNISTROC-AUC: 0.9935 -> 0.9926Hurt
Replace knowledge-distillation loss Lk with triplet loss Lm while retaining Lc (ablation)Student-teacher teacher embeddings · CIFAR-10ROC-AUC: 0.8196 -> 0.7940Hurt
Replace knowledge-distillation loss Lk with triplet loss Lm while retaining Lc (ablation)Student-teacher teacher embeddings · MNISTROC-AUC: 0.9935 -> 0.9935No clear effect
Use larger receptive fields (ablation)Student-teacher · MVTec AD categoriesnormalized area under PRO curve: 0.795 -> 0.893 (Carpet); 0.943 -> 0.725 (Wood)Mixed

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