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Towards Discovering the Effectiveness of Moderately Confident Samples for Semi-Supervised Learning

CVPR 2022 · Label-efficient and robust learning › Semi-supervised learning · approach: Safe and realistic semi-supervised learning · 11 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add gradient synchronization filtering for moderately confident samplesFixMatch · CIFAR-10, 40 labelserror rate (%): 13.81±3.37 -> 7.73±2.50Helped
Add prototype proximity filtering for moderately confident samplesFixMatch · CIFAR-100, 400 labelserror rate (%): 48.85±1.75 -> 42.08±1.10Helped
Add gradient synchronization filteringFixMatch · SVHN, 1000 labelserror rate (%): 2.28±0.11 -> 2.38±0.10Hurt
Add prototype proximity filteringFixMatch · SVHN, 1000 labelserror rate (%): 2.28±0.11 -> 2.39±0.12Hurt
Use GSF or PPF rather than FixMatchFixMatch · CIFAR-100, 400 labelserror rate (%): 6.89% and 6.77%Helped
Use GSF or PPF rather than FixMatchFixMatch · CIFAR-100, 2500 labelserror rate (%): 1.97% and 1.87%Helped
Use GSF or PPF rather than FixMatchFixMatch · CIFAR-100, 10000 labelserror rate (%): 1.15% and 1.26%Helped
Use moderate-confidence bounds of 0.75 and 0.95 rather than including all unlabeled samples (ablation)GSF and PPF · CIFAR-10, 40- and 250-label settingserror rateHelped
Discard highly confident samples by setting the upper bound to 1 (ablation)GSF and PPF · CIFAR-10 ablation settingserror rateHurt
Increase the GSF synchronization threshold to 1, degenerating to FixMatch (ablation)GSF · CIFAR-10, 40-label settingerror rateHurt
Vary the moderate-confidence lower or upper bound (ablation)GSF and PPF · CIFAR-10, 250-label settingerror rateNo clear effect
Vary the GSF synchronization threshold (ablation)GSF · CIFAR-10, 250-label settingerror rateNo clear effect

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