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Table 1 Dataset abbreviations

From: Multiobjective clustering algorithm for complex data in learning management systems

Field

Meaning

Stud_ID

Student/Teacher ID

Course_ID

Course ID

TOTAL_LOGIN

Number of times a user logged in

Last_Login_Date

It is the last time a user logged into the Blackboard

Enrollments

The number of students enrolled in the class

Content_Items

The number of uploaded items to the class

Gradecenter _Columns

It is the number of fields in the grade center. This counts the number of assignments, quizzes, and other exams in the class

Assignments

This field record students grades in each assignment assigned to students e.g. Assg1, Assig 2,..etc

Tests

This field records the exams grades, e.g. Quiz 1, Quiz 2, midterm, and final exam

Total_Spent_Time_Hrs

The total time a student and a teacher spent on the Blackboard in hours

Total_Spent_Time_Mins

The total time a student and a teacher spent on the Blackboard in seconds