In the graduation design check, HowNet, PaperYY and PaperPass are all commonly used duplicate checking tools. They have their own characteristics, but which one is more accurate depends on the specific situation and needs.

HowNet duplicate checking is an authoritative duplicate checking tool, with a huge database and advanced detection technology, which can accurately detect academic misconduct. However, due to the high price of HowNet, it may not be economical for some students.

Both PaperYY and PaperPass are based on published papers, online articles and other resources to check duplication, but their databases and detection algorithms are slightly different. The duplicate checking rate of PaperYY may be higher than that of HowNet, because its database contains some resources on the Internet, and the duplicate checking standard of PaperPass is stricter than that of HowNet, so some contents that failed in detection of HowNet may pass in PaperPass.

Therefore, for users who need to accurately detect the duplication of graduation projects, it is recommended to use HowNet to check the duplication. If you need to check the first draft or economic plan, you can consider checking the copy of the first draft with paper YY, and then checking the copy of the final draft with HowNet. This can better ensure the academic integrity and quality of graduation design.