Looking at https://snap.stanford.edu/data/web-Amazon.html and http://jmcauley.ucsd.edu/data/amazon/, I can't find any mention on what process they used to generated these datasets.
Looking at https://snap.stanford.edu/data/web-Amazon.html and http://jmcauley.ucsd.edu/data/amazon/, I can't find any mention on what process they used to generated these datasets.