To give a simple example, what kind of things a software promotes to you is recommended to you based on your user preferences. For example, if you stay on which type of article or video for a long time, the data will be

Upload it to the analysis data center of the software, and then the software will automatically learn with AI, and then recommend to you videos that you stay in for a long time. This is your user preference. For example, if you often watch food videos, then we will promote them to you.

Most of the things are related to food. To put it simply, it is your interests, hobbies and hobbies.

But this does not represent your real thoughts, but just your software usage habits. It is possible that you like those food things not because you like food, but just like to watch these things, but the software will think that you are more interested in food.

Interested, so I will promote more food-related things to you.