Performence of different decoder opt

[Mingxiang Tuo]

I find 4 different decoder opt in san.py. But the default one (decode_op=0) is different from the paper. Can you show me the performence of 4 different decoder opt?

[Xiaodong]

We have implemented several decoder opts and found the performances were similar. The current config is a toy setting and we plan to publish the trained model soon. Please let me know if you have further issues.