data leakage in datasets

[Antondfger]

Hello! Please check usersequence.txt in recdatasets. It seems there are data issues, as the sequences of items seems to be not in the correct order. Here’s an example for user A21KH420DK0ICA from the Toys dataset. First image from amazon datasets (https://jmcauley.ucsd.edu/data/amazon/) , second from your repository. (Check column reviewTime)

[jkdwxm]

@evison @chrisjtan 您好，请问这个Issue提到的问题是你们数据预处理失误吗？