Re-examination of a paper refers to the degree of overlap and repetition between the content of the paper and the information on the internet or in the paper library, so as to judge whether the paper is suspected of copying other people's content. Therefore, the paper duplication checking rate is also called similarity rate, plagiarism rate, plagiarism rate and so on.

In the process of papertime duplicate checking, the paper content is usually divided into different parts for detection, including abstract, text and ending. However, non-verbal references such as pictures and formulas in the paper will not be included in the scope of duplicate checking.

In addition, different duplicate checking systems will use different algorithms and standards when detecting the duplicate rate, so the duplicate checking results may be different. At the same time, different schools or institutions have different requirements and standards for the repetition rate of papers, so the final duplicate checking results need to be subject to the regulations of schools or institutions.

In short, in order to reduce the duplicate checking rate, students need to avoid plagiarism, cite references reasonably and describe the contents of documents in their own words.