文章基本信息

标题：An Improved Parameter-Estimating Method in Bayesian Networks Applied for Cognitive Diagnosis Assessment
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作者：Wang, Ling Ling ; Xin, Tao ; Yanlou, Liu 等
期刊名称：Frontiers in Psychology
电子版ISSN：1664-1078
出版年度：2021
卷号：12
页码：1835
DOI：10.3389/fpsyg.2021.665441
出版社：Frontiers Media
摘要：Bayesian networks (BNs) can be employed to cognitive diagnostic assessment (CDA). Most of the existing researches on the BNs for CDA utilized the MCMC algorithm to estimate parameters of BNs. When EM algorithm and gradient descending (GD) learning method were adopted to estimate the parameters of BNs, some challenges may emerge in educational assessment due to the monotonic constraints (greater skill should lead to better item performance) cannot be satisfied in the above two method. This paper proposed to train the BN first based on the ideal response pattern data contained in every CDA and continue to estimate the parameters of BN based on the EM or the GD algorithm regarding the parameters based on the IRP training method as informative priors to satisfy the monotonic constraints. Both the simulation study and realistic data analysis demonstrated the validity and feasibility of the new method. The BN based on the new parameter estimating method exhibits promising statistical classification performance and even outperforms the G-DINA method in some conditions.
关键词：Bayesian Networks (BNs); ideal response pattern; Cognitive diagnostic model; parameter estimating method; cognitive diagnostic assessment (CDA)