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Qval (version 1.2.4)

The Q-Matrix Validation Methods Framework

Description

Provide a variety of Q-matrix validation methods for the generalized cognitive diagnosis models, including the method based on the generalized deterministic input, noisy, and gate model (G-DINA) by de la Torre (2011) discrimination index (the GDI method) by de la Torre and Chiu (2016) , the Hull method by Najera et al. (2021) , the stepwise Wald test method (the Wald method) by Ma and de la Torre (2020) , the multiple logistic regression‑based Q‑matrix validation method (the MLR-B method) by Tu et al. (2022) , the beta method based on signal detection theory by Li and Chen (2024) and Q-matrix validation based on relative fit index by Chen et al. (2013) . Different research methods and iterative procedures during Q-matrix validating are available .

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Version

Install

install.packages('Qval')

Monthly Downloads

228

Version

1.2.4

License

GPL-3

Maintainer

Haijiang Qin

Last Published

November 25th, 2025

Functions in Qval (1.2.4)

fit

Calculate Fit Indices
att.hierarchy

Iterative Attribute Hierarchy Exploration Methods for Cognitive Diagnosis Models
get.PVAF

Calculate PVAF
extract

Extract Components from Qval Package Objects
Wald.test

Wald Test for Two Q-vectors
get.beta

Calculate \(\beta\)
CDM

Parameter Estimation for Cognitive Diagnosis Models (CDMs) by MMLE/EM or MMLE/BM Algorithm.
get.Rmatrix

Restriction Matrix
get.Mmatrix

Calculate \(\mathbf{M}\) matrix
get.R2

Calculate McFadden Pseudo-R2
sim.MQ

Simulate Mis-specifications in Q-matrix
update

Update Method for Various Objects
summary

Summary Methods for Various Objects
get.priority

Priority of Attribute
plot

Plot Methods for Various Qval Objects
sim.data

Generate Response
sim.Q

Generate a Random Q-matrix
print

Print Methods for Various Objects
is.Qident

Check Whether a Q-Matrix is Identifiable
zTNR

Calculate True-Negative Rate (TNR)
zTPR

Calculate True-Positive Rate (TPR)
zUSR

Calculate Under-Specification Rate (USR)
zOSR

Calculate Over-Specification Rate (OSR)
zVRR

Calculate Vector Recovery Ratio (VRR)
zQRR

Calculate Q-matrix Recovery Rate (QRR)
validation

Perform Q-matrix Validation Methods