远程教学系统中几个关键模型研究

本文研究了远程教学系统中知识点关联模型、试题难度模型、学生能力评估模型、实时监控模型，提出知识点之间的关联是动态的，知识点体系结构可以转化为层状或网状的结构；试题难度是与系统相互作用并动态变化的；学生能力的评估模型可以很好地把学生能力这个模糊概念标量化。实时监督模型首次使用了基于时间的监控机制。

Research on Several Key Models in Distance-Learning Systems

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 evaluation can quantize the fuzzy concept of student's ability,and the on-line monitor model based on time is proposed for the first time.