Question about dataset splitting

[Blosslzy]

Thank you for sharing your excellent work! I have a few questions regarding the dataset splitting.

1. As mentioned in the preprocessing section, I noticed that there are two types of '.csv' files: '*.csv' and 'large.csv'. Does this signify the training set and validation set, and does the test set refer to the combination of test sets from various datasets?
   2)How can I obtain the following meta-files?
   meta_files = [
   'ffpp_c23_meta.csv',

   'ffpp_c40_meta.csv',

   'ffpp_meta.csv',

   'ffpp_c23_real_meta.csv',

   'ffpp_c40_real_meta.csv',

   'ffpp_meta_real.csv',

   'celebdf_real_meta.csv',
   'forgerynet_meta.csv',
   'dffd_meta.csv',
   'forgerynir_meta.csv',
   ]
   Thank you very much!!!!