Features | Label |
Gender | Male, Female |
Age | Teenager (<20), Youth (21 - 40), Middle-aged (41 - 60), Elderly (>61) |
Occupation | Student, Enterprise employee, Employees of public institutions, Freelance |
Education | Junior high school, High school, Undergraduate, Graduate |
Learning interest | Subject 1, subject 2, …, subject N |
Learning pattern | Video, Text, Exercise |
Forum participation | Diving (forum posts = 0), Bubbling (1 - 10), Active (>10) |