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Supervised Masked Knowledge Distillation for Few-Shot Transformers

CVPR 2023 · Label-efficient and robust learning › Self-supervised and contrastive · approach: Masked autoencoder pretraining · 46 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add self-supervised MIM pretraining before supervised SMKD training (ablation)SMKD on mini-ImageNet · mini-ImageNetaccuracy: 33.14±0.13 -> 74.28±0.18; 45.02±0.14 -> 88.82±0.09Helped
Combine class-level and patch-level distillation losses (ablation)SMKD · mini-ImageNetaccuracy: 70.21±0.17 -> 74.28±0.18; 87.03±0.10 -> 88.82±0.09Helped
Add class-level distillation alongside patch-level distillation (ablation)SMKD · mini-ImageNetaccuracy: 70.84±0.18 -> 74.28±0.18; 85.90±0.11 -> 88.82±0.09Helped
Replace class-level distillation with cross-entropy while retaining patch loss (ablation)SMKD · mini-ImageNetaccuracy: 70.70±0.18 -> 74.28±0.18; 86.77±0.10 -> 88.82±0.09Hurt
Add MIM to class-token self-supervision in stage 1 (ablation)SMKD pretraining · mini-ImageNetaccuracy: 58.55 -> 60.93; 78.90 -> 80.38Helped
Use blockwise masking instead of no masking during pretraining (ablation)SMKD pretraining · mini-ImageNetaccuracy: 59.15±0.17 -> 60.93±0.17; 79.23±0.12 -> 80.38±0.12Mixed
Use blockwise masking instead of random masking (ablation)SMKD pretraining and supervised training · mini-ImageNetaccuracy: 60.94±0.18 -> 60.93±0.17; 79.62±0.13 -> 80.38±0.12; 74.07±0.18 -> 74.01±0.17; 88.66±0.09 -> 88.89±0.09Mixed
Replace simple average patch-loss weighting with self-attention weighting (ablation)SMKD patch distillation · mini-ImageNetaccuracy: 74.28±0.18 -> 74.11±0.18; 88.82±0.09 -> 88.52±0.10Hurt
Concatenate cls features with weighted-average patch features at evaluation (ablation)SMKD few-shot evaluation · mini-ImageNetaccuracy: 71.26±0.17 -> 74.28±0.18; 88.03±0.10 -> 88.82±0.09Helped
Add patch-size-8 processing to SMKD (ablation)SMKD with Prototype/Classifier evaluation · mini-ImageNetaccuracy: 74.28±0.18 -> 74.00±0.17; 88.82±0.09 -> 89.57±0.09Mixed
Add spectral token pooling to SMKD with patch size 8 (ablation)SMKD · mini-ImageNetaccuracy: 74.00±0.17 -> 75.32±0.18; 89.57±0.09 -> 89.23±0.18Mixed
Allow distillation between intra-class global and local crops (ablation)SMKD self-supervised pretraining · few-shot classificationaccuracyHurt

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