Let's take the material "Achieving a life that children respect (compulsory reading for family education)" as an example and give you a specific explanation. The label says: family education and children's education, and the website makes recommendations according to the label. Recommend books, materials, papers and videos related to family education and children's education. Book recommendation: data recommendation: test paper recommendation: fill in the data label (1). There are not too many words in the data, only 1-3 words are needed. The text has a certain generality to the content of the data, so that users who download the data can know what the data is about at a glance.

(2) Words with such a wide range as "year (such as 20 10)" and "simulated test questions" cannot appear in keywords. For example, if the label says "20 1 1 year civil servants", a lot of 20 1 1 year materials will appear in the website recommendation, but these 20 1 1 year materials are not all "civil servants", so such labels are also. The following is an example of "20 10 Computer Grade Examination Network Engineer Exam Simulation Examination". According to the topic, the contents of the label can be "Computer Level 4 Network Engineer, Network Engineer, web workers" and so on. The common words such as "20 10, computer grade examination, network engineer, simulation examination", "20 10", "computer grade examination" and "simulation examination" are too broad to accurately describe the specific content of the materials.

(3) It is particularly important to note that many users simply use ","to separate titles when filling in labels, just as they got in the "error demonstration" above. The name of the information is "20 10 Computer Grade Examination for Network Engineers", so the label is "20 10 Computer Grade Examination for Network Engineers".