Amazon Dataset

[prejieunt]

Hi~ Thank for providing the code.
I have questions about Amazon Book Dataset. What is the train.txt file? Does that mean a test dataset in machine learning? If so, I guess both Amazon train dataset and test datasets are actually customer-evaluated data.

It is difficult for me to understand the process by which theories are coded, even though I have referred to related papers. In particular, it is difficult to understand the codes in which data become nodes. I'd like to get recommendations for reference materials.