This software will divide your article into small pieces, then pick it up and compare it with the data stored in its database. If it is the same, then this piece is plagiarism. After the comparison, count the number of words and see what the proportion of all plagiarized short words is in the total number of words, which is the plagiarism rate of the paper.

That's basically it. I don't know if you understand.

If you want to know more information, you can download "Dogo Paper Detection Network" from Baidu.