is.Qid

Checks whether a Q-matrix fulfills the conditions for strict and generic identifiability according to Gu &amp; Xu (2021).

Provides useful tools for cognitive diagnosis modeling (CDM). The package includes functions for empirical Q-matrix estimation and validation, such as the Hull method (Nájera, Sorrel, de la Torre, & Abad, 2021, <doi:10.1111/bmsp.12228>) and the discrete factor loading method (Wang, Song, & Ding, 2018, <doi:10.1007/978-3-319-77249-3_29>). It also contains dimensionality assessment procedures for CDM, including parallel analysis and automated fit comparison as explored in Nájera, Abad, and Sorrel (2021, <doi:10.3389/fpsyg.2021.614470>). Other relevant methods and features for CDM applications, such as the restricted DINA model (Nájera et al., 2023; <doi:10.3102/10769986231158829>), the general nonparametric classification method (Chiu et al., 2018; <doi:10.1007/s11336-017-9595-4>), and corrected estimation of the classification accuracy via multiple imputation (Kreitchmann et al., 2022; <doi:10.3758/s13428-022-01967-5>) are also available. Lastly, the package provides some useful functions for CDM simulation studies, such as random Q-matrix generation and detection of complete/identified Q-matrices.

Pablo Nájera

cdmTools

Useful Tools for Cognitive Diagnosis Modeling

Miguel A. Sorrel

Francisco J. Abad

Rodrigo S. Kreitchmann

Kevin Santos

is.Qid function

<dl><dt>Q</dt>
<dd>A J items x K attributes Q-matrix (<code>matrix</code> or <code>data.frame</code>).</dd>
<dt>model</dt>
<dd>CDM to be considered. It includes <code>"DINA"</code>, <code>"DINO"</code>, or <code>"others"</code> (for other CDMs; e.g., G-DINA, A-CDM).</dd></dl>

Arguments

Pablo Nájera, Universidad Pontificia Comillas Miguel A. Sorrel, Universidad Autónoma de Madrid

Author

Check whether a Q-matrix is identifiable — is.Qid

<dl>

<dt>Q</dt>
<dd>A J items x K attributes Q-matrix (<code>matrix</code> or <code>data.frame</code>).</dd>


<dt>model</dt>
<dd>CDM to be considered. It includes <code>"DINA"</code>, <code>"DINO"</code>, or <code>"others"</code> (for other CDMs; e.g., G-DINA, A-CDM).</dd>

</dl>

Pablo Nájera, Universidad Pontificia Comillas Miguel A. Sorrel, Universidad Autónoma de Madrid

is.Qid: Check whether a Q-matrix is identifiable

Description

Usage

Value

Arguments

Author

References

Examples