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Heterogeneous Knowledge Distillation Using Information Flow Modeling

CVPR 2020 · Label-efficient and robust learning › Knowledge distillation · approach: Distillation with causal and adaptive guidance · 148 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
use information-flow distillation with a student-compatible auxiliary teacher and critical-period weightingCNN1 student · CIFAR-10 classificationtest accuracy: 71.44 -> 71.97Helped
use the proposed information-flow distillation methodCNN1 student · CIFAR-10 metric learning without contrastive supervisionmAP (c): 51.73 -> 53.06Helped
use the proposed information-flow distillation methodCNN1 student · STL-10 distribution shifttop-100 (c): 47.98 -> 50.57Helped
use the proposed information-flow distillation methodCNN-2 student · CUB-200accuracy: 34.96 -> 36.95Helped
use the proposed information-flow distillation methodCNN-3 cloning a HoG feature extractor · SUN AttributemAP (c): 27.22 ± 2.60 -> 27.63 ± 0.62Helped
add decaying critical-period weighting for intermediate-layer information flow (ablation)multi-layer PKT-H and single-layer PKT · CIFAR-10 trainingconvergence speedHelped
reduce the initial intermediate-layer weight from 100 to 1 in the PKT-H decay schedule (ablation)PKT-H · CIFAR-10 trainingconvergenceHurt
match student layers to the appropriate auxiliary-teacher layers (CNN-1-A layers 2 and 3) (ablation)heterogeneous multi-layer KD student · CIFAR-10 metric learningprecisionHelped
match the student to overly discriminative ResNet-18 layers 3 and 4 (ablation)heterogeneous multi-layer KD student · CIFAR-10 metric learningprecisionHurt
match the student to a teacher layer with lower mutual information with targets (ablation)heterogeneous multi-layer KD student · CIFAR-10 metric learningprecisionHurt
use a slightly less discriminative ResNet-18 Layer 1 for transfer (ablation)heterogeneous multi-layer KD student · CIFAR-10 metric learningprecisionHelped
use an auxiliary teacher closer in complexity to the student rather than a much smaller or larger auxiliary (ablation)CNN1 and CNN1-L students · CIFAR-10 metric learningmAP (c): 37.89 -> 53.06; 37.51 -> 39.25Helped

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