Szukana fraza: [Abstract = "Therefore, the system has to collect information about the student, which is done during the registration process. A user is classified into a group of students who are similar to him\/her. Using information about final successful scenarios of students who belong to the same class as the new student, the system determines an opening learning scenario. The opening learning scenario is the first learning scenario proposed to a student after registering in an intelligent e\-learning system. After each lesson, the system tries to evaluate the student\?s knowledge."]