If you're trying to implement dragan, see some of the closed issues - the code here is old and is not a final implementation of the paper

[ssabdb]

I'm not sure if this is abandoned or not, but I spent a considerable amount of time trying to replicate the notebook without looking at the closed issues.

Teaches me a lesson not to look at the closed issues!

See (which have been answered by the authors)
#6
#5

It also looks like several implementations have implemented based on the old version of the code, e.g.
https://github.com/opendp/smartnoise-sdk/blob/main/synth/snsynth/pytorch/nn/patectgan.py