train_batch_multiRank_inductive_reddit_Mixlayers_sampleA.py is the final model. (precomputated the AH in the bottom layer) The original Reddit data should be transferred into the .npz format using this function: transferRedditDataFormat.
Note: By default, this code does no sampling. To enable sampling, change `main(None)` at the bottom to `main(100)`. (The number is the sample size. You can also try other sample sizes)
train_batch_multiRank_inductive_reddit_Mixlayers_uniform.py is the model for uniform sampling.
train_batch_multiRank_inductive_reddit_Mixlayers_appr2layers.py is the model for 2-layer approximation.
create_Graph_forGraphSAGE.py is used to transfer the data into the GraphSAGE format, so that users can compare our method with GraphSAGE. We also include the transferred original Cora dataset in this repository (./data/cora_graphSAGE).

train.py is the original GCN model.
pubmed_Mix_sampleA.py 	The dataset could be defined in the codes, for example: flags.DEFINE_string('dataset', 'pubmed', 'Dataset string.')
pubmed_Mix_uniform.py and pubmed_inductive_appr2layers.py are similar to the ones for reddit.
pubmed-original**.py means the codes are used for original Cora or Pubmed datasets. Users could also change their datasets by changing the data load function from load_data() to load_data_original().