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Positive-Unlabeled Compression on the Cloud

NeurIPS 2019 · Label-efficient and robust learning › Recognition and long-tail · approach: Loss design and classifier theory · 21 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Select training examples from unlabeled data with PU learning instead of manually choosing positivesCIFAR-10 student distillation · CIFAR-10accuracy (%): 93.44 -> 93.75Helped
Use 50,000 randomly selected data, including negative examples, rather than PU-selected positivesCIFAR-10 student distillation · CIFAR-10accuracy (%): 87.02Hurt
Limit training to 50,000 PU-positive examples instead of using all selected positives (ablation)PU-s1 CIFAR-10 · CIFAR-10accuracy (%): 93.75 -> 91.56Hurt
Use PU-selected Flickr1M data rather than 500k original ImageNet samplesImageNet student distillation · ImageNettop-5 accuracy (%): 85.88 -> 85.33No clear effect
Use PU-selected examples instead of 500k original ImageNet samplesImageNet student distillation · ImageNettop-1 accuracy (%): 63.90 -> 61.21Hurt
Use all PU-selected Flickr1M positives rather than 500k selected samples (ablation)PU ImageNet · ImageNettop-5 accuracy (%): 85.33 -> 86.00Helped
Use one to 20 labeled examples per category with PU augmentationMNIST student distillation · MNISTclassification accuracy (%): 90.3 -> 98.5Helped
Use 50,000 randomly selected samples instead of all PU-selected training examples (ablation)PU-s1 MNIST · MNISTclassification accuracy (%): 98.5 -> 98.3Hurt
Use the attention-based multi-scale extractor and RKD rather than the compared ResNet-34 and traditional KD configuration (ablation)PU classifier and student distillation · CIFAR-10, varying class priorclassification accuracyHelped
Vary the assumed class prior away from the true prior (ablation)PU learning with attention-based multi-scale extractor and RKD · CIFAR-10, varying class priorclassification accuracyMixed

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