Paper duplication checking pays attention to both coincidence rate and similarity. The coincidence rate can be used to quantify the similarity between two papers, and the similarity can be evaluated by calculating the proportion of repeated parts. Similarity check examines the similarities between the two papers in sentence structure and semantic expression in more detail, and can judge whether plagiarism exists more accurately when plagiarism is found.

In order to ensure the originality and quality of academic circles, it is necessary to comprehensively consider the coincidence rate and similarity when reviewing papers. By using scientific and technological means such as text comparison algorithm and similarity calculation method, duplicate checking of papers can be carried out efficiently and accurately. This is of great significance to the development and progress of academic circles, and also has a positive guiding role in cultivating academic ethics and standardizing writing behavior.