The accuracy of artificial intelligence. The repeated sentences in the paper are modified by the weight reducer, and the repeated or similar contents in the paper are accurately found. Ai generally refers to artificial intelligence and paper detection system. It adopts the internationally advanced dynamic semantic cross-domain identification and fingerprint comparison technology of massive papers, which can help users to judge whether similar parts are properly cited, over-cited, and whether there are multiple submissions. The detection speed and accuracy of the self-checking system have reached the advanced level.