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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