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Unsupervised Representation Learning by Invariance Propagation

NeurIPS 2020 · Label-efficient and robust learning › Recognition and long-tail · approach: Contrastive representation theory

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
use recursive kNN-graph propagation to discover positives instead of KNN (ablation)InvP · ImageNet linear classificationtop-1 center-crop accuracy: 57.6 -> 63.3Helped
add hard positive sampling (ablation)InvP · ImageNet linear classificationtop-1 center-crop accuracy: 60.7 -> 63.3Helped
add hard negative sampling (ablation)InvP · ImageNet linear classificationtop-1 center-crop accuracy: 61.9 -> 63.3Helped
use InvP rather than MoCo v2 pretrainingResNet-50-MLP · ImageNet linear classificationtop-1 accuracy: 71.1 -> 71.3Helped
use InvP rather than the strongest listed baselineResNet-50-MLP · Places205 linear classificationtop-1 accuracy: 55.0 -> 53.5Hurt
use InvP rather than PCLResNet-50-MLP · Pascal VOC07 linear classificationtop-1 accuracy: 84.0 -> 84.7Helped
pretrain with InvP rather than SimCLRResNet-50-MLP · ImageNet 1% labelstop-5 accuracy: 75.5 -> 78.2Helped
pretrain with InvP rather than SimCLRResNet-50-MLP · CIFAR10 transfertop-1 accuracy: 97.7 -> 97.9Helped
pretrain with InvP rather than SimCLRResNet-50-MLP · CIFAR100 transfertop-1 accuracy: 85.9 -> 84.7Hurt
pretrain with InvP rather than SimCLRResNet-50-MLP · Pascal VOC2007 transfer11 point mAP: 84.1 -> 85.4Helped
pretrain with InvP rather than SimCLRResNet-50-MLP · Caltech-101 transfermean per-class accuracy: 92.1 -> 92.5Helped
pretrain with InvP rather than SimCLRResNet-50-MLP · Stanford Cars transfertop-1 accuracy: 91.3 -> 90.3Hurt

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