The difference in repetition rate between paperpass and HowNet is not very big, because the professional duplicate checking systems used by the two duplicate checking websites are different. Although the two duplicate checking systems are different, the repetition rate will be biased.

The duplicate checking principle of two duplicate checking websites is the same, that is, if 13 characters appear in succession and are similar, it is judged to be duplicate; in other words, if it exceeds 13 characters, it will be marked as red by the system software and included in the repetition rate. When HowNet checked the duplicate, the yellow text was "quotation" and the red article was "suspected plagiarism".

Related introduction:

PaperPass is the first Chinese document similarity comparison system in the world, and has developed into an authoritative and reliable online website for checking Chinese originality and preventing plagiarism. Has been committed to the detection of academic papers.

PaperPass was born in 2007. On the basis of testing its version, it was developed and officially launched after absorbing a large number of users' opinions. The official version updated the comparison algorithm, which greatly improved the comparison efficiency and accuracy. In addition, practical functions such as uploading files, downloading reports and counting citation rates have been added.