Because the duplicate checking system will check all the information in the paper, if the user puts a reference in the paper to be tested, the reference part will also be checked by HowNet, otherwise it will not be checked. However, whether it is necessary to put references in the paper for testing requires students to check the duplicate requirements of the school.

If the school requires to check the contents of important references, then students should also include references in the duplicate check to ensure the consistency of the duplicate check results. If the school requires only the text to be tested, then the students themselves delete other parts and leave only the text to be tested.

Reasons why duplicate checking of papers does not include references.

1. Due to the high similarity of papers, references do not participate in duplicate checking. References are not within the scope of duplicate checking, but there is no certain rule about the percentage of high repetition rate of papers. Every journal and school has different requirements for the repetition rate of papers, which may change according to the field and nature of the contents of the papers.

2. Universities generally don't require duplicate checking of papers' references. Duplicate checking software can identify correct directories and references and eliminate them, so it doesn't participate in duplicate checking of the text. But we also want to upload the whole paper content to the paper duplicate checking website, so that the detected repetition rate is the most accurate.