Q-Matrix Accuracy Indices for Cognitive Diagnosis Models

• In Event: Cognitive Diagnostic Models I

Abstract

This study introduces a family of indices to quantify the uncertainties associated with the provisional Q-matrix specifications. Based on the posterior probabilities of the q-vectors for each item, the kappa indices indicate the proportion of correctly specified q-entries. Simulation results demonstrate their effectiveness in determining the quality of Q-matrix specifications.

Authors

• Rodrigo Schames Kreitchmann, Universidad Nacional de Educacion a Distancia

• Jimmy de la Torre, UNIVERSITY OF HONG KONG