First, the concept transformation of paper keywords
After analyzing the theme content and finding out the central theme of the paper, many people need to summarize and refine it in order to express the theme concept accurately and appropriately. This step is easy to confuse concepts, leading to keyword tagging errors. In order to express the theme more accurately and appropriately, it is often necessary to transform the concept of the theme. The conversion of the theme concept should be carried out not only literally, but also in the sense of the theme concept, so we should pay special attention to the comprehensive analysis of the concept.
Specific solution: the conversion of theme concepts, according to the complexity, there are two ways: the direct conversion of concepts and the decomposition conversion of concepts. The direct transformation of concepts can be completed only by looking up the vocabulary directly, but the decomposition and transformation of concepts are much more complicated. In the process of concept transformation, indexer needs not only extensive knowledge, but also rich imagination. For example, when indexing the word "unequal leg length", the words that can be changed conceptually may be: short limb deformity, short limb, unequal limb length and so on. The correct indexing is "unequal leg length". It can be seen that profound knowledge and rich imagination can help us better complete the concept transformation and lead to the correct keywords.
Second, the application of keyword thesaurus
Many people have a certain degree of randomness in the choice of keywords in their papers, and do not choose keywords suitable for their papers according to the existing list of keywords in medical papers. This has a great influence not only on our information inquiry, but also on the paper publishers themselves.
Therefore, in the process of writing academic papers, we can determine keywords according to "net" vocabulary. Especially medical academic papers should be paid more attention to, because many professional terms in medicine are different from those we usually use. If you don't use technical terms and keywords in your academic papers, it will also have an impact on your academic papers themselves.
Third, how to correctly analyze the topic is to choose keywords.
The first step is to read the article. The steps of reading the article are as follows: ① reading the topic and making clear the subject and object of the article; (2) Read the abstract carefully to understand the author's intention and the content and key points of the article; ③ Read the conclusion to determine its novelty and value; (4) Browse important paragraphs, charts and even full texts to determine their main contents and centers, reference value and scope of application.
The second step is theme refinement. The refinement of the theme should be judged on the basis of careful reading of the manuscript, and the key sentences in the text should be highly accurate and concise, so as to grasp the main content of the essence and discard the secondary content. The customary practice of indexing keywords is often to choose directly from the title, but there must be a premise that the title has basically covered the theme of the article.
In fact, the titles of quite a few papers fail to reveal the theme of the article directly, and the theme content of some papers is implicit. It is difficult to make a correct judgment only by reading and analyzing headlines and abstracts. Only by reading the full text, repeatedly scrutinizing and grasping the essence through phenomena can we make a comprehensive and correct summary of the theme. It should be noted that keywords are often the words with the highest frequency in the text. When reading the manuscript, you should know which words are used most frequently, so it is not difficult to extract keywords.