A sequential cognitive diagnosis model for polytomous responses.


This paper proposes a general polytomous cognitive diagnosis model for a special type of graded responses, where item categories are attained in a sequential manner, and associated with some attributes explicitly. To relate categories to attributes, a category-level Q-matrix is used. When the attribute and category association is specified a priori, the… (More)
DOI: 10.1111/bmsp.12070


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