Keywords are selected from the title, abstract and text of the paper, which are words with substantial meaning to express the central content of the paper. Keywords are words used by computer systems to index the content characteristics of papers, which are convenient for information systems to collect and provide readers with retrieval. Generally, 3-8 words are selected as keywords for each paper, and a new line is set at the bottom left of the "abstract".

The text of the paper is the main body of the paper, which should include arguments, arguments, argumentation process and conclusions. There are two blank lines between the text and the keyword.

Extended data

Description of paper keywords

1, keywords are words or phrases that reflect the concept of the paper, usually arranged at the bottom of the abstract, and the font size is different from the text. Generally, each article can choose 3~8 keywords, and multiple keywords are separated by semicolons, which are arranged from big to small according to the extension (conceptual scope) level of the entry.

2, keywords are generally noun words or phrases, and in some cases there are verb words or phrases.

3. English keywords corresponding to Chinese keywords should be marked. Chinese comes first, foreign language comes last. Chinese keywords are marked with "keywords:" or "[keywords]"; English keywords are marked with "keywords:".

4. Try to select keywords from the National Standard Chinese Glossary; Important terms and names of new disciplines, regions, people and documents that are not included in the glossary can also be used as keywords. Keywords should be general technical terms that can cover the main content of the paper.

Method of selecting keywords

The general selection method of keywords is: after the author finishes writing the paper, he selects from its title, hierarchical title and text (high frequency and key words).

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