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Barlow Twins: Self-Supervised Learning via Redundancy Reduction

ICML 2021 · Label-efficient and robust learning › Self-supervised and contrastive · approach: Data-efficient and robust self-supervision · 770 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
remove the redundancy-reduction term (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 57.3Hurt
remove the invariance term (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 0.1Hurt
normalize embeddings along the feature dimension (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 69.8Hurt
remove batch normalization from projector hidden layers (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 71.2No clear effect
remove projector hidden-layer batch normalization and embedding normalization (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 53.4Hurt
replace the Barlow Twins loss with cross-entropy with temperature (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 63.3Hurt
add stop-gradient to one branch (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 70.5Hurt
add a predictor network to one branch (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 70.2Hurt
add stop-gradient and a predictor network (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%): 71.4 -> 61.3Hurt
reduce batch size to 256 (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%)No clear effect
increase projector output dimensionality (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%)Helped
increase projector depth up to three layers (ablation)Barlow Twins · ImageNet linear evaluationTop-1 accuracy (%)Helped

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