in data.py [0:0]
def ffhq1024(data_root):
# we did not significantly tune hyperparameters on ffhq-1024, and so simply evaluate on the test set
return os.path.join(data_root, 'ffhq1024/train'), os.path.join(data_root, 'ffhq1024/valid'), os.path.join(data_root, 'ffhq1024/valid')