The British journal of mathematical and statistical psychology
Identifiability conditions in cognitive diagnosis: Implications for Q-matrix estimation algorithms.
Hyunjoo Kim, Hans Friedrich Köhn, Chia-Yi Chiu
Published: 202510.1111/bmsp.70020
Abstract
The Q-matrix of a cognitively diagnostic assessment (CDA), documenting the item-attribute associations, is a key component of any CDA. However, the true Q-matrix underlying a CDA is never known and must be estimated-typically by content experts. Howe…
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