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Embedding Transfer With Label Relaxation for Improved Metric Learning

CVPR 2021 · Label-efficient and robust learning › Recognition and long-tail · approach: Contrastive representation theory · 39 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add source-space similarities as relaxed labels instead of binary class labels (ablation)Contrastive metric learning · CUB-200-2011Recall@1: 65.3 -> 70.4Helped
Add source-space similarities as relaxed labels instead of binary class labels (ablation)Contrastive metric learning · Cars-196Recall@1: 80.5 -> 88.2Helped
Use relative pairwise distances rather than absolute distances (ablation)Relaxed contrastive loss · CUB-200-2011Recall@1: 70.4 -> 72.1Helped
Use relative pairwise distances rather than absolute distances (ablation)Relaxed contrastive loss · Cars-196Recall@1: 88.2 -> 89.6Helped
Add multi-view data augmentation (ablation)Relaxed contrastive transfer · CUB-200-2011Recall@1: 71.5 -> 72.1Helped
Add multi-view data augmentation (ablation)Relaxed contrastive transfer · Cars-196Recall@1: 89.0 -> 89.6Helped
Transfer with relaxed MS loss instead of relaxed contrastive loss (ablation)Embedding transfer · Self-transfer across CUB-200-2011, Cars-196, and SOPRecall@1: 72.1 -> 72.3; 89.6 -> 89.2; 79.8 -> 79.3Mixed
Transfer with relaxed MS loss instead of relaxed contrastive loss (ablation)Embedding transfer with 64D target · Dimensionality reduction across CUB-200-2011, Cars-196, and SOPRecall@1: 67.4 -> 67.5; 86.5 -> 86.0; 76.3 -> 75.4Mixed
Use relaxed contrastive transfer instead of no embedding transferSimCLR representation · CIFAR-10linear evaluation accuracy: 93.4 -> 93.9Helped
Use relaxed contrastive transfer instead of no embedding transferSimCLR representation · STL-10linear evaluation accuracy: 89.2 -> 89.6Helped
Add relaxed contrastive transfer alongside HKDResNet56 → ResNet20 · CIFAR-100test accuracy: 71.63 -> 71.95Helped
Add relaxed contrastive transfer alongside HKDVGG13 → VGG8 · CIFAR-100test accuracy: 74.29 -> 73.82Hurt

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