Repeated checking of abstract. Abstract is a summary of the content of the thesis, which can make people better understand what the thesis is about, and all abstracts are very important parts of the graduation thesis, so it is a key point when checking the repetition of the thesis.

It is a summary of the paper. When we check the repetition of a paper, we'd better not separate the abstract from the text, because the repetition rate after separate detection may not be so accurate.

And whether it is undergraduate, junior college or self-taught, the whole thesis will be checked. Nowadays, many paper duplicate checking systems have strict requirements on duplicate checking. You can't be lazy and copy other people's contents directly as your own abstract.