Detection principle of 1: PaperFree takes dynamic fingerprint technology as the detection principle, while HowNet adopts the principle that continuous 13 characters are similar, which is judged as duplication by the system. In addition, the HowNet system has a threshold of 5%, and there will be errors in detecting the same article at the same time.
2 Comparison database range: PaperFree mainly compares dissertations with a large number of online resource libraries, while HowNet system has a wider range of comparison databases, including undergraduate PMLC, postgraduate VIP, periodical AMLC and other different systems, and the comparison databases of each system are different, such as undergraduate thesis joint comparison database and postgraduate academic thesis joint comparison database.
3 charging method: PaperFree provides the first free trial, and only charges for the second use. HowNet does not support individual users to register accounts. Students can only go to the library to check the duplicates. The library either charges fees or limits the number of exams.
System features: the paperless inspection system comes with modification suggestions, comprehensive evaluation, multi-format paper inspection report (main report of webpage, PDF version and word version for auxiliary modification), synonyms and sentences with no repetition rate translated by the system. HowNet only provides reports, and you can see similar sources and sources, so you need to modify and reduce the weight yourself.
In short, the algorithms and databases of different duplicate checking systems are different. The specific choice of which system to use for duplicate checking and weight reduction needs to be based on the requirements of schools or institutions and the actual needs of individuals.