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Inverse Problems Leveraging Pre-trained Contrastive Representations

NeurIPS 2021 · Label-efficient and robust learning › Self-supervised and contrastive · approach: Empirical contrastive visual learning · 0 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Train a contrastive student to match clean CLIP representations from corrupted inputs, then use a linear probeImageNet-100 classification with random masking · ImageNet-100 val, Random Mask 90%top-1 accuracy: 74.12$\pm$0.09 -> 82.96$\pm$0.08Helped
Train a contrastive student to match clean CLIP representations from corrupted inputs, then use a linear probeImageNet-100 classification with additive Gaussian noise · ImageNet-100 val, Gaussian Noise σ = 0.5top-1 accuracy: 71.43$\pm$0.14 -> 76.23$\pm$0.10Helped
Train a contrastive student to match clean CLIP representations from corrupted inputs, then use a linear probeImageNet-100 classification with Gaussian blur · ImageNet-100 val, Gaussian Blur n = 37top-1 accuracy: 68.94 -> 77.80Helped
Use only 10% of labeled data for the linear probe instead of all labeled dataContrastively trained CLIP robust encoder · ImageNet-100 val, Random Mask 90%top-1 accuracy: 82.96$\pm$0.08 -> 79.87$\pm$0.12Hurt
Use only 10% of labeled data for the linear probe instead of all labeled dataContrastively trained CLIP robust encoder · ImageNet-100 val, Random Mask 90%top-1 accuracy versus supervised baseline: 74.12$\pm$0.09 -> 79.87$\pm$0.12Helped
Use a contrastive uniformity term rather than MSE alone (ablation)Robust encoder trained on ImageNet-100 random masking · ImageNet-100 val, masking levels 90–99%top-1 accuracyHelped
Replace student-versus-teacher comparisons with student-versus-student comparisons in the uniformity term (ablation)Contrastive robust encoder · ImageNet-100 val, masking levels 90–99%top-1 accuracyNo clear effect
Use NT-XEnt comparisons across student and teacher representations instead of the paper's student-versus-teacher uniformity term (ablation)Contrastive robust encoder · ImageNet-100 val, masking levels 90–99%top-1 accuracyHurt
Transfer the robust representations to CIFAR-10 with random-mask trainingImageNet-100-trained robust encoder versus supervised baseline · CIFAR-10top-1 accuracy: 79.83$\pm$0.04 -> 80.93$\pm$0.04Helped
Transfer the robust representations to STL-10 with random-mask trainingImageNet-100-trained robust encoder versus supervised baseline · STL-10top-1 accuracy: 81.09$\pm$0.05 -> 89.44$\pm$0.05Helped
Transfer the robust representations to ImageNet-100B with random-mask trainingImageNet-100-trained robust encoder versus supervised baseline · ImageNet-100Btop-1 accuracy: 67.45$\pm$0.09 -> 80.09$\pm$0.07Helped
Transfer the robust representations to COVID X-ray with Gaussian-noise trainingImageNet-100-trained robust encoder versus supervised baseline · COVID X-raytop-1 accuracy: 83.54$\pm$0.15 -> 79.74$\pm$0.26Hurt

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