The Optimal Q-Matrix Design for Item Pool in Nonparametric CD-CAT
It is very important for designing item pool optimal Q-matrix for nonparametric CD-CAT which can guide the item writing without the need of model parameter estimation.Inspired by p-optimal design,a proportional method is proposed for designing optimal Q-matrix,and an existing parametric method is extended to nonparametric CD-CAT,called the fusion method.Simulation results show that two methods have similar performance,while the propor-tional method has certain advantages when the number of items is small.
万方数据
维普
