Duplication of graduation thesis is actually the detection of academic misconduct, so the most common academic misconduct is plagiarism, so various duplicate checking systems are born to detect the thesis, and the results of the detection serve as the basis for whether there is academic misconduct in the thesis. Now basically all colleges and universities are required to enter the corresponding system for testing before they can repeat, and the undergraduate repeat rate is generally below 30%. Some schools may have students who have been promoted to undergraduate courses, and may require 25% to resume graduation.

When the paper is uploaded to the system, the system uses related technologies to extract the sentences and keywords of the paper, and uses classification technology to classify the user's paper field, so as to prevent the frequently used phrases in repeated search from being detected as similar to the papers in the same field.