It is generally acceptable that the similarity of published papers is very low, because publishing papers requires similarity. For example, core journals have strict requirements on the similarity of papers, which is generally below 30%, and the cited parts of papers must be clearly marked according to the standard citation format. If the lower you can meet the requirements, of course, you should also pay attention to the innovation and uniqueness of the paper, so that you have a better chance of publishing.
Paper classification:
In order to explore and master the writing rules and characteristics of papers, it is necessary to classify papers. Because the content and nature of the paper itself are different, the research fields, objects, methods and expressions are different, and the classification methods of the paper are also different.
Papers can be divided into theoretical papers, experimental papers, descriptive papers and design papers according to the nature of content and research methods. In addition, there is a comprehensive classification, which divides papers into four categories: thematic, argumentative, comprehensive and comprehensive.