HowNet is an authoritative academic misconduct detection system in China, and its database covers a large number of academic journals and dissertations, so its detection results are widely recognized. HowNet's duplicate checking algorithm is strict, which can accurately detect the similarity of texts, but at the same time, it will misjudge some dissimilar contents as similarities, especially when faced with some professional terms or expressions in a specific context.
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.
Generally speaking, if users 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.