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On the Importance of Asymmetry for Siamese Representation Learning

CVPR 2022 · Label-efficient and robust learning › Self-supervised and contrastive · approach: Invariance-based self-supervised learning · 28 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Apply high-variance MultiCrop to the source encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 69.9 (+4.1%)Helped
Apply high-variance MultiCrop to the target encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 57.1 (-8.7%)Hurt
Apply high-variance ScaleMix to the source encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 67.3 (+1.5%)Helped
Apply high-variance ScaleMix to the target encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 52.8 (-13.0%)Hurt
Apply weaker augmentation to the target encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 67.2 (+1.4%)Helped
Apply weaker augmentation to the source encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 51.0 (-14.8%)Hurt
Apply stronger augmentation to the source encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 66.7 (+0.9%)Helped
Apply stronger augmentation to the target encoder (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 62.2 (-3.6%)Hurt
Replace target projector BN with SyncBN to reduce target variance (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 66.5 (+0.7%)Helped
Replace source projector BN with SyncBN (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 64.7 (-0.9%)Hurt
Allocate more MeanEnc views to target (1 source, 3 target rather than 3 source, 1 target) (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 59.9 -> 67.9Helped
Combine source MultiCrop, target AsymBN, and target MeanEnc (ablation)MoCo v2 · ImageNet linear probing, 100 epochstop-1 accuracy (%): 65.8 -> 71.3 (+5.5%)Helped

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