So, what is the specific meaning of color labeling? Generally speaking, yellow labels represent some similarities or synonyms in the text. For example, there are two references to "computer network" in the paper, and the duplicate checking system thinks that their meanings are similar, so these two words will be marked in yellow at this time. Green labels represent some repetitive content in the text. For example, in a paper, the sentence structure and words of two paragraphs are very similar, and the duplicate checking system will think that there is plagiarism and mark it in green. Finally, red marks represent plagiarism in the text. If a paper has a high similarity with other documents, the duplicate checking system will mark this part of the text in red and add other tips beside it, such as title and author.

Of course, color label is only a way that is easy to understand and use in the duplicate checking system. Other marking methods will also be used in different systems. For example, in some systems, similar text may be marked in bold or underlined; In other systems, similar text may be directly highlighted or inserted with other symbols, such as "×" or "* *".

Either way, the essential purpose of the duplicate checking system is to detect whether there is plagiarism in the text. Therefore, using color labeling to identify similar texts is one of the common ways in duplicate checking system, and it is also a more intuitive and easy-to-understand way. Using color labeling will make plagiarism more obvious, and at the same time, it can better remind the author of the independence and authenticity of the paper.