For the top sci-tech journals in the industry, the duplicate checking rate is very strict, and different types of academic journals have different requirements for duplicate checking rate. The requirements of general periodical papers are not very strict, the duplicate checking rate is generally not higher than 25%, and some slightly strict duplicate checking rates are not higher than 20%, while the requirements of core periodical papers are often very strict, generally not exceeding 15%, and some may even not exceed 10%, and the requirements of each core periodical are different, 10%.
We need to know what kind of duplicate checking system is required by the school or unit when we understand the duplicate checking standard of periodical papers. For example, HowNet, the periodical detection of HowNet is mainly divided into the following two types, namely AMLC (Academic Misconduct Document Detection System for Sci-tech Journals) and SMLC (Academic Misconduct Document Detection System for Social Science Journals). Both of them use the general database of online publication of academic documents in China, which has the most abundant data resources at present, as the data comparison database of the full text, and then choose the appropriate paper detection system to detect the papers.