How to reproduce results for art styles?

[ruchikachavhan]

Hi. Thanks for the great paper. I wanted to replicate the results for the art style of Van Gogh. It would be really helpful if you could answer the questions

1. In ti.yaml, can you give more information on how to change the placeholder tokens? Did you tune Ti in your experiments for art styles in the paper?
2. I am getting this error - RuntimeError: torch.cat(): expected a non-empty list of Tensors at line 287 in train_attn.py. Could you please let me know how to solve this?