1) Offline education try to transmit knowledge and skills based on face-to-face contact and also study psychologi- cally on how humans learn. Psychometrics and statistical techniques have been applied to data, like student's be- havior/performance, curriculum, etc., that was gathered in classroom environments. 2) E-learning and learning management system (LMS). E-learning provides online instruction, and LMS also pro- vides communication, collaboration, administration, and reporting tools. Web mining (WM) techniques have been applied to student's data stored by these systems in log files and databases. 3) Intelligent tutoring system (ITS) and adaptive educational hypermedia system (AEHS) are an alternative to the just- put-it-on-the-web approach, trying to adapt teaching to