sim20seqGDINA

Artificial Qc-matrix and item parameters for a 20-item test measuring 5 attributes
are given. Based on the Qc-matrix and item parameters, responses of 2000 examinees
were simulated using the random seed of 12345.

datasets

A set of psychometric tools for cognitive diagnostic analyses for both dichotomous and polytomous responses. Various cognitive diagnosis models can be estimated, include the generalized deterministic inputs, noisy and gate (G-DINA) model by de la Torre (2011) <DOI:10.1007/s11336-011-9207-7>, the sequential G-DINA model by Ma and de la Torre (2016) <DOI:10.1111/bmsp.12070>, and many other models they subsume. Joint attribute distribution can be saturated, higher-order or structured. Q-matrix validation, item and model fit statistics, model comparison at test and item level and differential item functioning can also be conducted. A graphical user interface is also provided.

Wenchao Ma

GDINA

The Generalized DINA Model Framework

Jimmy de la Torre

sim20seqGDINA function

A list of Q-matrix and item parameters for a 20-item test with components:
<dl class="dl-horizontal">
<dt><code>simdat</code></dt><dd>simulated polytomous responses of 2000 examinees</dd>
<dt><code>simQ</code></dt><dd>artificial Qc-matrix</dd>
<dt><code>simItempar</code></dt><dd>artificial item parameters(category level probability of success for each latent group)</dd>
</dl>

Format

Simulated data, Q-matrix and item parameters (20 items, sequential DINA model) — sim20seqGDINA

A list of Q-matrix and item parameters for a 20-item test with components:
<dl class='dl-horizontal'>
<dt><code>simdat</code></dt><dd>simulated polytomous responses of 2000 examinees</dd>
<dt><code>simQ</code></dt><dd>artificial Qc-matrix</dd>
<dt><code>simItempar</code></dt><dd>artificial item parameters(category level probability of success for each latent group)</dd>
</dl>

sim20seqGDINA: Simulated data, Q-matrix and item parameters (20 items, sequential DINA model)

Description

Usage

Arguments

Format