Table 14 List of Extracted Features and their Descriptions
From: Using learning analytics to develop early-warning system for at-risk students
No | Feature | Category | Description |
|---|---|---|---|
1 | total_session_count | Session | The total number of sessions |
2 | total_session_time | Session | The total amount of time (in minute) spent in the learning environment |
3 | unique_session_days | Session | The number of different days on which the learning log is recorded |
4 | total_visits | Navigation | The total number of visits made to the learning materials |
5 | content_visit | Navigation | The total number of visits made to the content pages |
6 | notification_visit | Navigation | The total number of visits made to the notification page |
7 | announcement_visit | Navigation | The total number of visits made to the announcement page |
8 | post_visit | Navigation | The total number of visits made to the post page |
9 | discussion_visit | Navigation | The total number of visits made to the discussion page |
10 | total_posts_created | Post | The total number of posts created |
11 | post_writing_time | Post | The average amount of time (in second) spent for writing posts |
12 | unique_days_posted | Post | The number of different days on which posts are written |
13 | tag_created_count | Post | The number of new tags created while writing post |
14 | tag_used_count | Post | The number of tags used in the written posts |
15 | copy_paste_count | Post | The number of times using copy & paste while writing posts |
16 | keystroke_count | Post | The average number of keystroke made by the student while writing a post |
17 | backspace_count | Post | The average number of backspace key used by the student while writing a post |
18 | out-of-focus_count | Post | The average number of times the page lost focus while writing a post |
19 | post_open_count | Post | The number of posts opened |
20 | comment_created_count | Post | The number of comments created |
21 | post_rating_count | Post | The number of post rated |
22 | comment_rating_count | Post | The number of comments rated |
23 | response_create_count | Discussion | The total number of responses written in the discussion forum |
24 | response_open_count | Discussion | The total number of times to open responses in the discussion forum |
25 | response_rating_count | Discussion | The number of responses rated in the discussion forum |
26 | question_rating_count | Discussion | The number of questions rated in the discussion forum |