The paper duplicate checking system of HowNet will check the duplicate of the paper according to the standard of continuous occurrence of 13 characters, and judge it as duplicate. The report can see the repetition rate, citation rate, repetition rate and non-citation rate of the full text. The paper duplicate checking system of HowNet has also set a threshold of 5%. If the copy rate of a paper exceeds 5%, then the paper will not be submitted to the paper duplicate checking system of HowNet.

Generally speaking, the first draft of the paper will not directly choose HowNet to check the duplicate, and systems such as papertime will be used more.