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期刊名:Psychometrika

缩写:PSYCHOMETRIKA

ISSN:0033-3123

e-ISSN:1860-0980

IF/分区:3.1/Q1

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This work establishes a new identifiability theory for a cornerstone of various cognitive diagnostic models (CDMs) popular in psychometrics: the Q-matrix. The key idea is a novel tensor-unfolding proof strategy. Representing the joint distr...