In a cognitive diagnostic assessment (CDA), attributes refer to fine‐grained knowledge
points or skills. The Q‐matrix is a central component of CDA, which specifies the relationship …

With the purpose to assist the subject matter experts in specifying their Q-matrices, the
authors used expectation–maximization (EM)–based algorithm to investigate three …

Attribute structure is an explicit way of presenting the relationship between attributes in
diagnostic measurement. The specification of attribute structures directly affects the …

The ability to rapidly provide examinees with detailed and effective diagnostic information is
a critical topic in psychology. Knowing what diagnostic criteria the examinees have met …

The Q-matrix, which specifies the relationship between items and attributes, is a crucial
component of cognitive diagnostic models (CDMs). A precisely specified Q-matrix allows for …

A key issue of cognitive diagnostic models (CDMs) is the correct identification of Q-matrix
which indicates the relationship between attributes and test items. Previous CDMs typically …

To improve the calibration accuracy and calibration efficiency of cognitive diagnostic
computerized adaptive testing (CD-CAT) for new items and, ultimately, contribute to the …

ABSTRACT A nonparametric technique based on the Hamming distance is proposed in this
research by recognizing that once the attribute vector is known, or correctly estimated with …

摘要Q 矩阵是认知诊断的核心, 专家构建的Q 矩阵通常存在一定错误, 会降低估计精度,
因而需要进行修正. 采用随机森林(random forest, RF) 算法, 以PVAF, 对数似然值, 改造后的R …

The rise in popularity and use of cognitive diagnostic models (CDMs) in educational
research are partly motivated by the models' ability to provide diagnostic information …