If you want to check whether there is duplication between a paper and a published book, you can use the Daya duplicate checking system. If colleges and universities re-examine students' papers every year, they must use a paper re-examination system like China Knowledge Network. Therefore, the number of users of HowNet is also very large.
Although both Daya duplicate checking system software and HowNet duplicate checking system software are called detection system software, they are quite different. Everyone should choose according to their own needs, because the results of these two system softwares are very different.
Due to limited resources, China Knowledge Network charges the highest in the industry. Generally, if we want to check the duplicate of private messages, we must link to HowNet through some third-party platforms, such as academic misconduct websites or ant duplicate checking websites. These websites charge by article.
On the other hand, Daya checks the database. If the school has purchased the system, as long as it is in the school's ip address, there is no need to pay extra, and the school will pay for us.