项目属性标错时可达阵补救作用的研究
The Research on the Remedial Effects of Reachability Matrix When Identifying an Item Attribute Incorrectly

以Q矩阵理论为基础，从分析专家给测验项目标定属性时可能出现的差错入手，设计不同的测验Q矩阵和模拟实验，分析比较在不同情况下的模式判准率，考察可达阵对测验Q矩阵标定出现差错时的补救作用。
On the basis of the Q matrix theory,through analyzing the possible mistakes that the experts identify the attributes of items,different test item matrices are designed and lots of simulation experiments are made to compare the classification accuracies,in order to study if the reachability matrix has remedial effect to the Q matrix misspeci-fication