Different paper duplicate checking systems have different degrees of rigor, so it is hard to say which system is the most stringent. From the aspects of database, algorithm and detection technology, HowNet duplicate checking system is one of the most authoritative and strict duplicate checking platforms in China. Compared with other detection systems, it has the largest academic literature resource pool in China, including a large number of doctoral and doctoral dissertations, periodicals and conference papers, which makes the duplicate checking results more accurate and comprehensive.

For papers in certain disciplines or fields, other duplicate checking systems may be more suitable, such as paperfree and papertime. Therefore, when choosing the paper duplicate checking system, you need to choose the appropriate system according to your own subject field and needs.