基于IRT／CTT混合模型的上机测试软件研究与实现

STUDY AND REALIZATION ON COMPUTER TEST SOFTWARE BASED ON IRT/CTT MIXED MODEL

介绍了一种基于IRT/CTT混合模型的上机测试软件实现方法。详细介绍了基于IRT模型的测试算法实现过程。对基于CTT模型实现的上机测试软件中测试结果打包和传输问题给出了实现方法。

In this paper we put forward an implementation method for computer test software based on IRT/CTT mixed model. Theoretical and objective questions in the test are realized on IRT model basis, we discussed the construction of the item bank, and presented the implementation process of the testing algorithm based on IRT model in detail. Operation questions in the test are based on CTT model, we gave out our implementation method for solving the result packing and submitting which are of the common problems. Practice result shows that com- puter test software based on IRT/CTT mixed model can assess students＇learning effect more accurately, and improve the examine efficiency.