By using big data to check the duplication of entries, we can find out the plagiarism of Internet resources. The second step is to use free case cross-examination, that is, to compare several cases with each other and find out whether there is plagiarism between them.

Duplicate checking, also known as paper duplicate checking, is to compare the papers written by oneself with those of major discussion libraries through the paper detection system. Checking the weight is a respect for the competition and a way to ensure the fairness of the contestants.