This is my first data analysis project

The data analysis project is based on the platform https://www.tipdm.org/

This is the first time for me to contact and do data analysis if there is any mistake or other methods,please forgive me and give me some advice I would appreciate it.

Due to the configuration of the computer,there is insufficient memory, and only part of the data is extracted for processing in some places. Therefore,there will be some defects in the recommendation based on the collaborative filtering algorithm

By the way,the previous analysis is relatively simple,so you can skip to the back to see the full analysis