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Binary Graph Neural Networks

CVPR 2021 · Graph learning › GNN architectures · approach: Simple and scalable GNNs · 45 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use three-stage cascaded distillation instead of direct distillation or no distillation (ablation)Binary DGCNN (BF1 and BF2) · ModelNet40accuracy (%): 61.26 -> 81.04; 62.84 -> 81.04Helped
Use Hamming k-NN with binary node features and real-valued weights (stage 2)Binary DGCNN · ModelNet40accuracy (%): 91.57 vs 92.89; 90.32 vs 92.89Helped
Binarize both weights and node features rather than retaining real-valued weights (ablation)Binary DGCNN · ModelNet40accuracy (%): 91.57 -> 81.08; 90.32 -> 81.32Hurt
Use PReLU instead of ReLU or no additional activation (ablation)Binary DGCNN edge messages · ModelNet40accuracy (%): 76.22 -> 81.08; 76.09 -> 81.08Helped
Add mean- or median-centering at edge aggregation or global pooling (ablation)Binary DGCNN · ModelNet40accuracy (%): 81.08 -> 51.05; 81.08 -> 75.93; 81.08 -> 67.87; 81.08 -> 60.82Hurt
Replace Gaussian RBF similarity with Hamming-based similarity for LSP (ablation)Binary DGCNN · ModelNet40accuracy (%): 81.08 -> 9.40Hurt
Use LSP with Gaussian RBF similarity (ablation)DGCNN binarization · ModelNet40accuracy (%): 81.04 -> 81.32; 81.00 -> 81.52; 91.05 -> 90.52Mixed
Use L2 rather than Hamming distance for k-NN (ablation)Full-binary BF1/BF2 DGCNN · ModelNet40accuracy (%): 81.32 -> 81.00; 81.08 -> 81.52No clear effect
Use binary GraphSAGE instead of full-precision GraphSAGEGraphSAGE · OGBN-Productsmean accuracy: 0.7862 -> 0.7300Hurt
Use logit matching to train binary GraphSAGE (ablation)Binary GraphSAGE · OGBN-Productsmean accuracy: 0.7300 vs 0.7260No clear effect
Use binary GraphSAGE instead of full-precision GraphSAGEGraphSAGE · OGBN-Proteinsmean accuracy: 0.7734 -> 0.7497Hurt
Binarize DGCNN and optimize Hamming-distance computationDGCNN on Raspberry Pi 4B · Raspberry Pi 4Bspeedup: 2xHelped

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