Paper keywords are the reflection of the overall content of the paper, and their selection is very important. Summarize a few points for reference:
1, according to the topic of the paper to extract keywords, the function of the paper is to solve practical problems, so it has functionality, and keywords are an important basis for others to search, so the setting of keywords can be extracted from the topics of literary theory, such as the prediction of mechanical development, and mechanical development can be extracted.
2. Extract keywords according to the theme of the paper, that is, what the paper is going to demonstrate and the research direction. This direction is the key. Whether it's your argument, your hypothesis or your final opinion, it can be a key word. Whether the key is suitable.
For example, the key words of law are related to law, literature is related to literature, and the key words of the name of the work can be designed for the work.
3. The design length of keywords should be between 3 and 8 words, which are arranged at the lower left of the "abstract". In order to meet the needs of document indexing or retrieval, the words or phrases selected from papers generally require certain specifications. If there are words or not included in relevant documents, they should not be selected.
In addition, the number of keywords is generally between 3 and 5, not necessarily too many, otherwise there is no focus.