Instructions for Length-Controllable AoANet

1. Clone original AoANet.
2. Put AttModel.py and CaptionModel.py in /Path/to/AoANet/models/, put opts.py in /Path/to/AoANet/.
3. Follow the instructions in original AoANet to train/inference/evaluate your model.
4. For evaluation, add --eval_lvl N to the inference script to generate captions on level N.