I don't know if you are an undergraduate or a graduate student. I only know about duplicate checking of graduate thesis. When graduate students use HowNet, the repetition rate cannot be higher than 25%. You can check it on Taobao, and it can be controlled at 15% when it is handed over to the school. The requirement for searching a paper online is less than 300,000 words, the size is less than 5M, and the price ranges from 150-200 yuan, sometimes it is cheap and sometimes it is expensive. Several people can search together, 6-7 people are almost the same. After a little sorting, it looks like an article. Generally, it will be uploaded, and the report will be published in about half an hour, which is quite fast. The management of small libraries in schools can also be checked. An article within 65438+ million words costs 150 yuan, which is more expensive than 65438+ million words. Anyway, the more people gather together an article, the lower the accuracy.