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Finding Task-Relevant Features for Few-Shot Learning by Category Traversal

CVPR 2019 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Fine-tuning strategies for few-shot · 393 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add CTM to the matching networkMatching Network · mini and tiered, 5-way and 20-way few-shotaccuracy: +3.54, +3.74, +2.66, +4.25; +2.99, +3.34, +2.23, +3.42Helped
Add CTM to the prototypical networkPrototypical Network · mini and tiered, 5-way and 20-way few-shotaccuracy: +3.23, +3.79, +3.55, +4.75; +3.50, +3.44, +2.46, +2.10Helped
Add CTM to the relation networkRelation Network · mini and tiered, 5-way and 20-way few-shotaccuracy: +3.84, +4.34, +3.76, +3.53; +3.67, +3.66, +4.76, +4.36Helped
Add the learned concentrator network (ablation)CTM with ResNet-18 · mini, 1-shotaccuracy: 55.41 -> 59.34Helped
Add the learned concentrator network (ablation)CTM with ResNet-18 · mini, 5-shotaccuracy: 73.29 -> 77.95Helped
Add the projector mask (ablation)CTM with ResNet-18 · mini, 1-shotaccuracy: 57.18 -> 59.34Helped
Add the projector mask (ablation)CTM with ResNet-18 · mini, 5-shotaccuracy: 74.25 -> 77.95Helped
Apply projector softmax across all locations rather than separately across channels at each location (ablation)CTM with ResNet-18 · mini, 1-shotaccuracy: 59.34 -> 57.77Hurt
Apply projector softmax across all locations rather than separately across channels at each location (ablation)CTM with ResNet-18 · mini, 5-shotaccuracy: 77.95 -> 75.03Hurt
Use sample-wise masking rather than cluster-wise masking (ablation)CTM with 4-layer backbone · mini, 5-way 1-shotaccuracy: 39.55% -> 41.62%Helped
Use sample-wise masking rather than cluster-wise masking (ablation)CTM with 4-layer backbone · mini, 5-way 5-shotaccuracy: 56.95% -> 58.77%Helped
Use cross-entropy rather than MSE loss (ablation)Relation Network with CTM · mini, 1-shotaccuracy: 61.37 -> 62.05; 0.68%Helped

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