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Ablation studies for our method. All results are obtained after CIDEr-D score optimization.
| Model | BLEU-1 | BLEU-4 | ROUGE-L | CIDEr-D |
|---|---|---|---|---|
| Baseline | 79.4 | 36.7 | 57.6 | 122.7 |
| +self-att(Dec) | 80.0 | 37.6 | 58.0 | 124.7 |
| +self-att(Enc+Dec) | 79.9 | 38.4 | 58.4 | 125.8 |
| Full: PW | 80.4 | 39.1 | 58.7 | 127.6 |
| Full: CW | 80.6 | 39.1 | 58.8 | 127.2 |
