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On Mixup Training: Improved Calibration and Predictive Uncertainty for Deep Neural Networks

NeurIPS 2019 · Label-efficient and robust learning › Recognition and long-tail · approach: Confidence calibration objectives · 428 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
train with mixupResNet-18 · CIFAR-10ECE: 0.023 -> 0.019Helped
train with mixupResNet-18 · CIFAR-100ECE: 0.049 -> 0.035Helped
train with mixupResNet-18 · CIFAR-10test accuracy: 95.12 -> 96.16Helped
increase mixup alpha to 1.0 (ablation)Mixup · CIFAR-10 ResNet-18ECE: 0.019 -> 0.1Hurt
mix features only, keeping hard labels (remove label mixing) (ablation)Mixup · CIFAR / STL-10 benchmarksECEHurt
train with mixupVGG-16 · STL-10/Gaussian noise OODAUROC: 73.28 -> 95.93Helped
apply temperature scalingVGG-16 baseline · STL-10/ImageNet OODAUROC: 80.57 -> 56.2Hurt
mixup vs label smoothing on ResNet-50ImageNet · ImageNetECENo clear effect
train with mixupImageNet ResNets · ImageNetaccuracy: ≈ 0.4Helped
use manifold mixup instead of mixup (200 epochs)PreActResNet-18 · CIFAR-100ECE: 0.047 -> 0.22Hurt
train with mixup on embeddingsSentence CNN · MR, TREC, IMDBECEHelped
extended training to 1000 epochsMixup · CIFAR-10/CIFAR-100ECENo clear effect

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