1. The duplicate checking system generally searches for keywords and key sentences. The comparative databases include: Chinese academic journals database, Chinese dissertations full-text database, China patent full-text database, China important conference papers full-text database, English papers full-text database, Hong Kong, Macao and Taiwan academic literature database, laws and regulations database, PaperRight cloud discussion database, etc.

2. After the paper is submitted for testing, the system will automatically test the chapter information of the paper. If there is automatically generated directory information, the system will detect the paper in sections, otherwise it will automatically detect the paper in sections.

3. There is a threshold for the sensitivity of the repeated inspection system, that is, 5%. In terms of paragraphs, plagiarism or quotations below 5% cannot be detected.

Duplicate checking is a necessary link in the completion of the project. Generally, schools will provide one or two opportunities, but it is not recommended to wait for the opportunity of schools. It is recommended to check online before submitting it to the school to avoid failing to meet the standards during the school inspection.

First, determine the test system used by the school. Domestic universities basically use three testing systems: HowNet, VIP and Wanfang. HowNet occupies more than 90% of the market. It is suggested to test directly with the system required by the school, with small error and no risk.

In addition, the paper is best organized by its own description, which can avoid repetition to some extent. After the paper is completed, you can check it again, so that you can know where there is duplication and whose paper it is, and then you can make effective revisions to reduce the repetition rate.