Table 10 Important Features Determined According to the Gini Index and Explanations
From: Using learning analytics to develop early-warning system for at-risk students
No | Feature | Gini index | Description |
|---|---|---|---|
1 | question_rating_count | 0.083 | The number of questions rated in the discussion forum |
2 | unique_session_days | 0.078 | The number of different days on which the learning log is recorded |
3 | unique_days_posted | 0.076 | The number of different days on which posts are written |
4 | total_posts_created | 0.056 | The total number of posts created |
5 | total_visits | 0.042 | The total number of visits made to the learning materials |
6 | total_session_count | 0.037 | The total number of sessions |
7 | tag_used_count | 0.033 | The number of tags used in the written posts |
8 | tag_created_count | 0.031 | The number of new tags created while writing post |
9 | response_create_count | 0.028 | The total number of responses written in the discussion forum |
10 | total_session_time | 0.024 | The total amount of time (in minute) spent in the learning environment |