| Hyperparameters | TSN | TSM | ECO | I3D | R3D | R2P1D |
|---|---|---|---|---|---|---|
| Number of Segments | 16 | 16 | 8 | 16 | 32 | 32 |
| Epochs | 50 | 50 | 100 | 50 | 80 | 80 |
| Weight Decay | 5e-4 | 5e-4 | 5e-4 | 5e-4 | 5e-4 | 5e-4 |
| Learning Rate | 0.001 | 0.0001 | 0.0001 | 0.01 | 0.001 | 0.001 |
| Batch Size | 4 | 4 | 8 | 20 | 16 | 16 |
| Momentum | 0.9 | 0.9 | (Adam) | 0.9 | 0.9 | 0.9 |
| Modality | RGB | RGB | RGB | RGB | RGB | RGB |
| Dropout | 0.8 | 0.5 | 0.8 | 0.5 | 0.5 | 0.5 |
| Backbone | ResNet-50 | ResNet-50 | BN-Inception, ResNet-18 | Inception | ResNet-50 | ResNet-34 |
| Datasets | TSN | TSM | ECO | I3D | R3D | R2P1D |
|---|---|---|---|---|---|---|
| HMDB51-1 | 48.6% | 58.17% | 44.4% | 48.43% | 54.77% | 60.26% |
| HMDB51-2 | 50.3% | 55% | 44.8% | 47.97% | 52.02% | 59.01% |
| HMDB51-3 | 48.76% | 57.65% | 41.5% | 45.56% | 52.3% | 59.9% |
| UCF | 81.97% | 88.47% | 77.11% | 75.51% | 83.74% | 86.92% |