polychoric0

maximum likelihood

dependence

Estimation, model selection and goodness-of-fit of (1) factor copula models for mixed continuous and discrete data in Kadhem and Nikoloulopoulos (2021) <doi:10.1111/bmsp.12231>; (2) bi-factor and second-order copula models for item response data in Kadhem and Nikoloulopoulos (2023) <doi:10.1007/s11336-022-09894-2>; (3) factor tree copula models for item response data in Kadhem and Nikoloulopoulos (2022) <arXiv:2201.00339>.

Aristidis Nikoloulopoulos

FactorCopula

Factor, Bi-Factor, Second-Order and Factor Tree Copula Models

Sayed H. Kadhem

Aristidis K. Nikoloulopoulos

polychoric0 function

<dl><dt>odat</dt>
<dd>nxd matrix of ordinal responses in 0,...,(ncat-1) or 1,...,ncat</dd><dt>iprint</dt>
<dd>flag for printing of intermediate results, including
bivariate tables for observed versus expected assuming discretized
bivariate Gaussian</dd><dt>prlevel</dt>
<dd>print.level for nlm for numerical optimization</dd></dl>

Arguments

Polychoric correlation — polychoric0

<dl>

<dt>odat</dt>
<dd>nxd matrix of ordinal responses in 0,...,(ncat-1) or 1,...,ncat</dd>

<dt>iprint</dt>
<dd>flag for printing of intermediate results, including
bivariate tables for observed versus expected assuming discretized
bivariate Gaussian</dd>

<dt>prlevel</dt>
<dd>print.level for nlm for numerical optimization</dd>

</dl>

Polychoric correlation

polychoric0: Polychoric correlation

Description

Usage

Value

Arguments

Details

Examples