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Semi-Supervised Learning under Class Distribution Mismatch

AAAI 2020 · Label-efficient and robust learning › Semi-supervised learning · approach: Safe and realistic semi-supervised learning · 135 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
UASD unlabelled-data training vs supervised onlyWRN-28-2 · CIFAR100 (50% mismatch)test error rate: 39.79 -> 35.93Helped
UASD vs supervised onlyWRN-28-2 · CIFAR100 + TinyImageNettest error rate: 48.31 -> 42.83Helped
pseudo-label SSL under class mismatchWRN-28-2 · CIFAR100 (50% mismatch)test error rate: 39.79 -> 43.30Hurt
VAT under class mismatchWRN-28-2 · TinyImageNet (50% mismatch)test error rate: 61.64 -> 63.75Hurt
Mean-Teacher under class mismatchWRN-28-2 · CIFAR100 + TinyImageNettest error rate: 48.31 -> 49.67Hurt
soft targets instead of one-hot hard targets (ablation)UASD · CIFAR10 6-class mismatchtest error rateHelped
add OOD filter (ablation)UASD · CIFAR10 6-class mismatchtest error rateHelped
larger accumulative ensemble (1000+ vs 10+/100+) (ablation)UASD · CIFAR10 6-class mismatchtest error rateHelped

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