关键词: 远程教学系统 知识点关联模型 试题难度模型 学生能力评估模型 实时监督模型

Abstract:

Several key models,which are the connection model of knowledge points, the model of subject difficulty, the model of students＇ability evaluation and  the actual time monitor model in distance learning systems ,are studied. The connection between knowledge points is dynamic and can be transformed into  a layered or network structure; the subject difficulty has a mutual effect on the system and changes dynamically. The model of students＇ ability evalua  ation can quantize the fuzzy concept of student＇s ability, and the on-line monitor model based on time is proposed for the first time.

Key words: distance learning system, connection model of knowledge points;subject difficulty model, model of students＇ability evaluation, on-line monitor model