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Weakly Supervised Temporal Action Localization via Representative Snippet Knowledge Propagation
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Measured effects reported in the paper
| What was changed | Where | Measured | Effect |
|---|---|---|---|
| add representative snippet summarization and propagation | FAC-Net (I3D) · THUMOS14 | mAP AVG (0.1:0.5): 54.4 -> 55.6 | Helped |
| add representative snippet knowledge propagation | FAC-Net (I3D) · ActivityNet1.3 validation | mAP AVG: 24.4 -> 25.0 | Helped |
| add representative snippets and a branch using updated features (ablation) | Baseline · THUMOS14 | mAP AVG: 36.8 -> 40.1 | Helped |
| add pseudo label supervision between branches (ablation) | Representative snippet model · THUMOS14 | mAP AVG: 40.1 -> 44.2 | Helped |
| add inter-video representative snippets from a memory bank (ablation) | Representative snippet model with pseudo label supervision · THUMOS14 | mAP AVG: 44.2 -> 45.1 | Helped |
| replace representative snippets with original video features (ablation) | BiRW representative snippet model · THUMOS14 | mAP AVG: 44.2 -> 42.4 | Hurt |
| select discriminative snippets instead of summarizing representatives (ablation) | Baseline · THUMOS14 | mAP AVG: 36.8 -> 34.8 | Hurt |
| generate representative snippets with k-means (ablation) | Baseline · THUMOS14 | mAP AVG: 36.8 -> 41.5 | Helped |
| generate representative snippets with agglomerative clustering (ablation) | Baseline · THUMOS14 | mAP AVG: 36.8 -> 40.1 | Helped |
| generate representative snippets with spectral clustering (ablation) | Baseline · THUMOS14 | mAP AVG: 36.8 -> 40.4 | Helped |
| allow backpropagation through EM attention (ablation) | EM-Att w/o BP · THUMOS14 | mAP AVG: 42.8 -> 44.2 | Helped |
| use a single-pass random walk instead of the proposed propagation (ablation) | Representative snippet propagation · THUMOS14 | mAP AVG: 44.2 -> 34.8 | Hurt |
Closest papers by meaning
- Weakly-Supervised Temporal Action Localization by Inferring Salient Snippet-Feature (AAAI 2024 · similarity 0.94)
- CoLA: Weakly-Supervised Temporal Action Localization With Snippet Contrastive Learning (CVPR 2021 · similarity 0.93)
- HR-Pro: Point-Supervised Temporal Action Localization via Hierarchical Reliability Propagation (AAAI 2024 · similarity 0.91)
- Bridge the Gap: From Weak to Full Supervision for Temporal Action Localization with PseudoFormer (CVPR 2025 · similarity 0.91)
- Similar Modality Enhancement and Action Consistency Learning for Weakly Supervised Temporal Action Localization (AAAI 2025 · similarity 0.89)
- Rethinking Pseudo-Label Guided Learning for Weakly Supervised Temporal Action Localization from the Perspective of Noise Correction (AAAI 2025 · similarity 0.89)
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