欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
该文选择了一种极小判别信息估计（MDIE）方法，用于项目反应理论中参数估计．根据项目反应理论的思想将MDIE中观察的离散概率分布向量由EM算法中的人工数据导出，得出一种新的估计方法，称之为MDIE／EM．MonteCarlo模拟显示对于被试人数多、项目个数中等情形，以估计精度为评价指标，新估计方法优于BILOG给出的估计．
英文摘要：
Minimum discriminate information estimation（MDIE） is adopted to estimate the unknown parameters in IRT. In order to improve the accuracy of estimation the modification for MDIE is proposed based on the principle of IRT. The artificial datum in the EM algorithm, fk and rkj , are applied to modify MDIE, the method is named MDIE/EM. The resuhs of Monte Carlo study show that the behavior of MDIE/EM is better than that of the professional software BILOG in the sense of accuracy of estimation, when the numbers of item and examinees are suitable.
同期刊论文项目
同项目期刊论文
期刊信息
位置：