Does the subject want to ask "Which APP is better, shanghai dianji university's undergraduate thesis duplicate checking or HowNet"? Check the weight. According to the public information related to the query, the main steps of the duplicate checking APP system using the self-developed dynamic fingerprint leapfrog scanning technology are: text preprocessing, semantic mining and depth recognition. The detection accuracy is over 99%, while HowNet APP is slightly expensive and the advanced search function of the software is not perfect, so the duplicate checking APP is good.