2. Many books are not in the test database, such as works. Extractable

3. Chapter conversion can't reduce the copy rate.

4. References in the paper, but in plagiarism detection software, for example, an article has 5000 words, and 1% of the articles have 50 words. If more than 50 words are plagiarism, even if references are added, it is also plagiarism.

As long as there are more than 20 units of words matching, it is considered plagiarism.

Modification method:

The first is the change of words. The professional vocabulary in the article can be kept, and synonyms can be changed as much as possible; Secondly, change the description in the text, such as inverted sentences, passive sentences and active sentences; Disrupt the order of paragraphs, divide the paragraphs when copying the original, and reorganize them.