基于项目反应理论的计算机自适应测试研究

Research of computer adaptive test based on IRT

研究基于项目反应理论的计算机自适应测试的几个关键过程,提出二参数和三参数逻辑斯蒂项目反应模型,定义基于这两种模型的项目信息函数和测试信息函数,最后以三参数逻辑斯蒂模型为例给出了函数中相关参数的估计方法.

This paper studied several key process of computer adaptive test based on item response theory,first proposed the two- parameter and three- parameter logistic item response model, then defined the project information function and test information function based on the two models, finally gave the estimation method of the relevant parameters in the function using the three- parameter logistic model as an example.