基于试题空间的学习诊断方法

在智能教学系统中，知识空间理论提供了一种描述知识结构的方法，常被用于进行对学生学习状态的诊断。本文对已有的知识空间理论进行了改进，提出了试题空间的概念，给出了基于最短路径的最优诊断原理，以此为基础，给出了一种新的更为有效的学习诊断方法．通过基于ID3算法的决策树生成方法对之进行了算法实现。研究表明，这种方法能够提高诊断的效率。

A New Learner Diagnosis Method Based on Question Space

Knowledge space theory provided a method to describe knowledge structure and is often used to learner diagnosis in intelligent tutoring system. In this paper, we proposed question space theory based on knowledge space theory. A new optimum diagnosis principal based on shortest path is also proposed. We implemented it through decision tree algorithm based on ID3. This method can raise the diagnosis efficiency.