Questions about _step_slice in line 285 of layers.py

[jinfengfeng]

Hi!

I have two quesitons:

1. The _step_slice function have 15 arguments listed in its definition, while len(sequences)+len(outputs_info)+len(non_sequences) is 17. Why?
2. step_slice returns h, ctx, alpha.T, why ctx_ and alpha.T will not disturb enc_ls, cc_ (arguments) ?

[orhanf]

Hi @jinfengfeng, you should not count the None elements in the outputs_info since they are not going to appear in the arguments list and in our case, None values are used as placeholders for ctx_ and alpha.T.

Please check the outputs_info section in scan documentation, here

[jinfengfeng]

Thanks! @orhanf